diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/README.md b/lib/node_modules/@stdlib/blas/ext/base/ctril/README.md
new file mode 100644
index 000000000000..a1d4fcb78db3
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/README.md
@@ -0,0 +1,360 @@
+
+
+# ctril
+
+> Copy the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var ctril = require( '@stdlib/blas/ext/base/ctril' );
+```
+
+#### ctril( order, M, N, k, A, LDA, B, LDB )
+
+Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+
+```javascript
+var Complex64Array = require( '@stdlib/array/complex64' );
+
+var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+var B = new Complex64Array( 4 );
+
+ctril( 'row-major', 2, 2, 0, A, 2, B, 2 );
+// B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+```
+
+The function has the following parameters:
+
+- **order**: storage layout.
+- **M**: number of rows in `A`.
+- **N**: number of columns in `A`.
+- **k**: diagonal above which to ignore. A value of `k = 0` refers to the main diagonal, `k < 0` refers to a diagonal below the main diagonal, and `k > 0` refers to a diagonal above the main diagonal. Accordingly, when `k > 0`, the function copies the lower triangle **and** one or more super-diagonals (i.e., part of the upper triangle), and, when `k < 0`, the function copies only part of the lower triangle.
+- **A**: input matrix.
+- **LDA**: stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`).
+- **B**: output matrix.
+- **LDB**: stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`).
+
+Setting the `k` parameter to a value other than `0` allows including and excluding super- and sub-diagonals, respectively. For example, to copy the lower triangle and the first super-diagonal,
+
+```javascript
+var Complex64Array = require( '@stdlib/array/complex64' );
+
+var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+var B = new Complex64Array( 4 );
+
+ctril( 'row-major', 2, 2, 1, A, 2, B, 2 );
+// B => [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ]
+```
+
+Note that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
+
+
+
+```javascript
+var Complex64Array = require( '@stdlib/array/complex64' );
+
+// Initial arrays...
+var A0 = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0 ] );
+var B0 = new Complex64Array( 5 );
+
+// Create offset views...
+var A1 = new Complex64Array( A0.buffer, A0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+var B1 = new Complex64Array( B0.buffer, B0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+ctril( 'row-major', 2, 2, 0, A1, 2, B1, 2 );
+// B0 => [ 0.0, 0.0, 3.0, 4.0, 0.0, 0.0, 7.0, 8.0, 9.0, 10.0 ]
+```
+
+#### ctril.ndarray( M, N, k, A, sa1, sa2, oa, B, sb1, sb2, ob )
+
+Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B` using alternative indexing semantics.
+
+```javascript
+var Complex64Array = require( '@stdlib/array/complex64' );
+
+var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+var B = new Complex64Array( 4 );
+
+ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+// B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+```
+
+The function has the following parameters:
+
+- **M**: number of rows in `A`.
+- **N**: number of columns in `A`.
+- **k**: diagonal above which to ignore.
+- **A**: input matrix.
+- **sa1**: stride of the first dimension of `A`.
+- **sa2**: stride of the second dimension of `A`.
+- **oa**: starting index for `A`.
+- **B**: output matrix.
+- **sb1**: stride of the first dimension of `B`.
+- **sb2**: stride of the second dimension of `B`.
+- **ob**: starting index for `B`.
+
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameters support indexing semantics based on starting indices. For example,
+
+
+
+```javascript
+var Complex64Array = require( '@stdlib/array/complex64' );
+
+var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+var B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
+
+ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 2 );
+// B => [ 0.0, 0.0, 0.0, 0.0, 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+```
+
+
+
+
+
+
+
+## Notes
+
+- Elements outside of the copied region are left unchanged.
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var ndarray2array = require( '@stdlib/ndarray/base/to-array' );
+var uniform = require( '@stdlib/random/array/discrete-uniform' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var numel = require( '@stdlib/ndarray/base/numel' );
+var shape2strides = require( '@stdlib/ndarray/base/shape2strides' );
+var ctril = require( '@stdlib/blas/ext/base/ctril' );
+
+var shape = [ 5, 8 ];
+var order = 'row-major';
+var strides = shape2strides( shape, order );
+
+var N = numel( shape );
+
+var opts = {
+ 'dtype': 'float32'
+};
+var A = new Complex64Array( uniform( N*2, -10, 10, opts ) );
+console.log( ndarray2array( A, shape, strides, 0, order ) );
+
+var B = new Complex64Array( uniform( N*2, -10, 10, opts ) );
+console.log( ndarray2array( B, shape, strides, 0, order ) );
+
+ctril( order, shape[ 0 ], shape[ 1 ], 0, A, strides[ 0 ], B, strides[ 0 ] );
+console.log( ndarray2array( B, shape, strides, 0, order ) );
+```
+
+
+
+
+
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/blas/ext/base/ctril.h"
+```
+
+#### stdlib_strided_ctril( layout, M, N, k, \*A, LDA, \*B, LDB )
+
+Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+
+```c
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/complex/float32/ctor.h"
+
+const float A[] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f };
+float B[] = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
+
+stdlib_strided_ctril( CblasRowMajor, 2, 2, 0, (stdlib_complex64_t *)A, 2, (stdlib_complex64_t *)B, 2 );
+```
+
+The function accepts the following arguments:
+
+- **layout**: `[in] CBLAS_LAYOUT` storage layout.
+- **M**: `[in] CBLAS_INT` number of rows in `A`.
+- **N**: `[in] CBLAS_INT` number of columns in `A`.
+- **k**: `[in] CBLAS_INT` diagonal above which to ignore.
+- **A**: `[in] stdlib_complex64_t*` input matrix.
+- **LDA**: `[in] CBLAS_INT` stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`).
+- **B**: `[out] stdlib_complex64_t*` output matrix.
+- **LDB**: `[in] CBLAS_INT` stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`).
+
+```c
+void API_SUFFIX(stdlib_strided_ctril)( const CBLAS_LAYOUT layout, const CBLAS_INT M, const CBLAS_INT N, const CBLAS_INT k, const stdlib_complex64_t *A, const CBLAS_INT LDA, stdlib_complex64_t *B, const CBLAS_INT LDB );
+```
+
+#### stdlib_strided_ctril_ndarray( M, N, k, \*A, sa1, sa2, oa, \*B, sb1, sb2, ob )
+
+Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B` using alternative indexing semantics.
+
+```c
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/complex/float32/ctor.h"
+
+const float A[] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f };
+float B[] = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
+
+stdlib_strided_ctril_ndarray( 2, 2, 0, (stdlib_complex64_t *)A, 2, 1, 0, (stdlib_complex64_t *)B, 2, 1, 0 );
+```
+
+The function accepts the following arguments:
+
+- **M**: `[in] CBLAS_INT` number of rows in `A`.
+- **N**: `[in] CBLAS_INT` number of columns in `A`.
+- **k**: `[in] CBLAS_INT` diagonal above which to ignore.
+- **A**: `[in] stdlib_complex64_t*` input matrix.
+- **sa1**: `[in] CBLAS_INT` stride of the first dimension of `A`.
+- **sa2**: `[in] CBLAS_INT` stride of the second dimension of `A`.
+- **oa**: `[in] CBLAS_INT` starting index for `A`.
+- **B**: `[out] stdlib_complex64_t*` output matrix.
+- **sb1**: `[in] CBLAS_INT` stride of the first dimension of `B`.
+- **sb2**: `[in] CBLAS_INT` stride of the second dimension of `B`.
+- **ob**: `[in] CBLAS_INT` starting index for `B`.
+
+```c
+void API_SUFFIX(stdlib_strided_ctril_ndarray)( const CBLAS_INT M, const CBLAS_INT N, const CBLAS_INT k, const stdlib_complex64_t *A, const CBLAS_INT strideA1, const CBLAS_INT strideA2, const CBLAS_INT offsetA, stdlib_complex64_t *B, const CBLAS_INT strideB1, const CBLAS_INT strideB2, const CBLAS_INT offsetB );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/blas/ext/base/ctril.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/complex/float32/ctor.h"
+#include
+
+int main( void ) {
+ // Define a 3x3 input matrix stored in row-major order:
+ const float A[] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f };
+
+ // Define a 3x3 output matrix:
+ float B[] = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
+
+ // Specify the number of elements along each dimension of `A`:
+ const CBLAS_INT M = 3;
+ const CBLAS_INT N = 3;
+
+ // Copy the lower triangular part of `A` to `B`:
+ stdlib_strided_ctril( CblasRowMajor, M, N, 0, (stdlib_complex64_t *)A, N, (stdlib_complex64_t *)B, N );
+
+ // Print the result:
+ for ( int i = 0; i < M; i++ ) {
+ for ( int j = 0; j < N; j++ ) {
+ int idx = ( (i*N) + j ) * 2;
+ printf( "B[ %i,%i ] = %f + %fi\n", i, j, B[ idx ], B[ idx+1 ] );
+ }
+ }
+
+ // Copy the lower triangular part of `A`, including the first super-diagonal, to `B` using alternative indexing semantics:
+ stdlib_strided_ctril_ndarray( M, N, 1, (stdlib_complex64_t *)A, N, 1, 0, (stdlib_complex64_t *)B, N, 1, 0 );
+
+ // Print the result:
+ for ( int i = 0; i < M; i++ ) {
+ for ( int j = 0; j < N; j++ ) {
+ int idx = ( (i*N) + j ) * 2;
+ printf( "B[ %i,%i ] = %f + %fi\n", i, j, B[ idx ], B[ idx+1 ] );
+ }
+ }
+}
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
+
+
+
+
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.js
new file mode 100644
index 000000000000..9ee2d8f34b27
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.js
@@ -0,0 +1,113 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var realf = require( '@stdlib/complex/float32/real' );
+var zeros = require( '@stdlib/array/zeros' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var floor = require( '@stdlib/math/base/special/floor' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var ctril = require( './../lib' );
+
+
+// VARIABLES //
+
+var LAYOUTS = [
+ 'row-major',
+ 'column-major'
+];
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {string} order - storage layout
+* @param {PositiveInteger} N - number of elements along each dimension
+* @returns {Function} benchmark function
+*/
+function createBenchmark( order, N ) {
+ var A = zeros( N*N, 'complex64' );
+ var B = zeros( N*N, 'complex64' );
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var z;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ z = ctril( order, N, N, 0, A, N, B, N );
+ if ( typeof z !== 'object' ) {
+ b.fail( 'should return an array' );
+ }
+ }
+ b.toc();
+ if ( isnanf( realf( z.get( i%z.length ) ) ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var min;
+ var max;
+ var ord;
+ var N;
+ var f;
+ var i;
+ var k;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( k = 0; k < LAYOUTS.length; k++ ) {
+ ord = LAYOUTS[ k ];
+ for ( i = min; i <= max; i++ ) {
+ N = floor( pow( pow( 10, i ), 1.0/2.0 ) );
+ f = createBenchmark( ord, N );
+ bench( format( '%s::square_matrix:order=%s,size=%d', pkg, ord, N*N ), f );
+ }
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..66cb36ecd4eb
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.native.js
@@ -0,0 +1,118 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var realf = require( '@stdlib/complex/float32/real' );
+var zeros = require( '@stdlib/array/zeros' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var floor = require( '@stdlib/math/base/special/floor' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var ctril = tryRequire( resolve( __dirname, './../lib/ctril.native.js' ) );
+var opts = {
+ 'skip': ( ctril instanceof Error )
+};
+var LAYOUTS = [
+ 'row-major',
+ 'column-major'
+];
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {string} order - storage layout
+* @param {PositiveInteger} N - number of elements along each dimension
+* @returns {Function} benchmark function
+*/
+function createBenchmark( order, N ) {
+ var A = zeros( N*N, 'complex64' );
+ var B = zeros( N*N, 'complex64' );
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var z;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ z = ctril( order, N, N, 0, A, N, B, N );
+ if ( typeof z !== 'object' ) {
+ b.fail( 'should return an array' );
+ }
+ }
+ b.toc();
+ if ( isnanf( realf( z.get( i%z.length ) ) ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var min;
+ var max;
+ var ord;
+ var N;
+ var f;
+ var i;
+ var k;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( k = 0; k < LAYOUTS.length; k++ ) {
+ ord = LAYOUTS[ k ];
+ for ( i = min; i <= max; i++ ) {
+ N = floor( pow( pow( 10, i ), 1.0/2.0 ) );
+ f = createBenchmark( ord, N );
+ bench( format( '%s::native,square_matrix:order=%s,size=%d', pkg, ord, N*N ), opts, f );
+ }
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.ndarray.js
new file mode 100644
index 000000000000..4e19d158a23b
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.ndarray.js
@@ -0,0 +1,127 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var realf = require( '@stdlib/complex/float32/real' );
+var zeros = require( '@stdlib/array/zeros' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var floor = require( '@stdlib/math/base/special/floor' );
+var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var ctril = require( './../lib' ).ndarray;
+
+
+// VARIABLES //
+
+var LAYOUTS = [
+ 'row-major',
+ 'column-major'
+];
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {string} order - storage layout
+* @param {PositiveInteger} N - number of elements along each dimension
+* @returns {Function} benchmark function
+*/
+function createBenchmark( order, N ) {
+ var sa1;
+ var sa2;
+ var A;
+ var B;
+
+ A = zeros( N*N, 'complex64' );
+ B = zeros( N*N, 'complex64' );
+
+ if ( isColumnMajor( order ) ) {
+ sa1 = 1;
+ sa2 = N;
+ } else { // order === 'row-major'
+ sa1 = N;
+ sa2 = 1;
+ }
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var z;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ z = ctril( N, N, 0, A, sa1, sa2, 0, B, sa1, sa2, 0 );
+ if ( typeof z !== 'object' ) {
+ b.fail( 'should return an array' );
+ }
+ }
+ b.toc();
+ if ( isnanf( realf( z.get( i%z.length ) ) ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var min;
+ var max;
+ var ord;
+ var N;
+ var f;
+ var i;
+ var k;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( k = 0; k < LAYOUTS.length; k++ ) {
+ ord = LAYOUTS[ k ];
+ for ( i = min; i <= max; i++ ) {
+ N = floor( pow( pow( 10, i ), 1.0/2.0 ) );
+ f = createBenchmark( ord, N );
+ bench( format( '%s::square_matrix:ndarray:order=%s,size=%d', pkg, ord, N*N ), f );
+ }
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.ndarray.native.js
new file mode 100644
index 000000000000..bbed0ee08f86
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/benchmark.ndarray.native.js
@@ -0,0 +1,132 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var realf = require( '@stdlib/complex/float32/real' );
+var zeros = require( '@stdlib/array/zeros' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var floor = require( '@stdlib/math/base/special/floor' );
+var isColumnMajor = require( '@stdlib/ndarray/base/assert/is-column-major-string' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var ctril = tryRequire( resolve( __dirname, './../lib/ndarray.native.js' ) );
+var opts = {
+ 'skip': ( ctril instanceof Error )
+};
+var LAYOUTS = [
+ 'row-major',
+ 'column-major'
+];
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {string} order - storage layout
+* @param {PositiveInteger} N - number of elements along each dimension
+* @returns {Function} benchmark function
+*/
+function createBenchmark( order, N ) {
+ var sa1;
+ var sa2;
+ var A;
+ var B;
+
+ A = zeros( N*N, 'complex64' );
+ B = zeros( N*N, 'complex64' );
+
+ if ( isColumnMajor( order ) ) {
+ sa1 = 1;
+ sa2 = N;
+ } else { // order === 'row-major'
+ sa1 = N;
+ sa2 = 1;
+ }
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var z;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ z = ctril( N, N, 0, A, sa1, sa2, 0, B, sa1, sa2, 0 );
+ if ( typeof z !== 'object' ) {
+ b.fail( 'should return an array' );
+ }
+ }
+ b.toc();
+ if ( isnanf( realf( z.get( i%z.length ) ) ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var min;
+ var max;
+ var ord;
+ var N;
+ var f;
+ var i;
+ var k;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( k = 0; k < LAYOUTS.length; k++ ) {
+ ord = LAYOUTS[ k ];
+ for ( i = min; i <= max; i++ ) {
+ N = floor( pow( pow( 10, i ), 1.0/2.0 ) );
+ f = createBenchmark( ord, N );
+ bench( format( '%s::native,square_matrix:ndarray:order=%s,size=%d', pkg, ord, N*N ), opts, f );
+ }
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/c/Makefile
new file mode 100644
index 000000000000..0756dc7da20a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := benchmark.length.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/c/benchmark.length.c b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/c/benchmark.length.c
new file mode 100644
index 000000000000..73e63e860230
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/benchmark/c/benchmark.length.c
@@ -0,0 +1,212 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ctril.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/complex/float32/ctor.h"
+#include
+#include
+#include
+#include
+#include
+
+#define NAME "ctril"
+#define ITERATIONS 1000000
+#define REPEATS 3
+#define MIN 1
+#define MAX 6
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+ printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total total number of tests
+* @param passing total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+ printf( "#\n" );
+ printf( "1..%d\n", total ); // TAP plan
+ printf( "# total %d\n", total );
+ printf( "# pass %d\n", passing );
+ printf( "#\n" );
+ printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param iterations number of iterations
+* @param elapsed elapsed time in seconds
+*/
+static void print_results( int iterations, double elapsed ) {
+ double rate = (double)iterations / elapsed;
+ printf( " ---\n" );
+ printf( " iterations: %d\n", iterations );
+ printf( " elapsed: %0.9f\n", elapsed );
+ printf( " rate: %0.9f\n", rate );
+ printf( " ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+ struct timeval now;
+ gettimeofday( &now, NULL );
+ return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
+}
+
+/**
+* Generates a random number on the interval [min,max).
+*
+* @param min minimum value (inclusive)
+* @param max maximum value (exclusive)
+* @return random number
+*/
+static double random_uniform( const double min, const double max ) {
+ double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+ return min + ( v*(max-min) );
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations number of iterations
+* @param N number of elements along each dimension
+* @return elapsed time in seconds
+*/
+static double benchmark1( int iterations, int N ) {
+ double elapsed;
+ float *A;
+ float *B;
+ double t;
+ int i;
+
+ A = (float *)malloc( 2 * N * N * sizeof( float ) );
+ B = (float *)malloc( 2 * N * N * sizeof( float ) );
+ for ( i = 0; i < 2 * N * N; i++ ) {
+ A[ i ] = (float)random_uniform( -10.0, 10.0 );
+ B[ i ] = 0.0f;
+ }
+ t = tic();
+ for ( i = 0; i < iterations; i++ ) {
+ // cppcheck-suppress uninitvar
+ stdlib_strided_ctril( CblasRowMajor, N, N, 0, (stdlib_complex64_t *)A, N, (stdlib_complex64_t *)B, N );
+ if ( B[ 0 ] != B[ 0 ] ) {
+ printf( "should not return NaN\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( B[ 0 ] != B[ 0 ] ) {
+ printf( "should not return NaN\n" );
+ }
+ free( A );
+ free( B );
+ return elapsed;
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations number of iterations
+* @param N number of elements along each dimension
+* @return elapsed time in seconds
+*/
+static double benchmark2( int iterations, int N ) {
+ double elapsed;
+ float *A;
+ float *B;
+ double t;
+ int i;
+
+ A = (float *)malloc( 2 * N * N * sizeof( float ) );
+ B = (float *)malloc( 2 * N * N * sizeof( float ) );
+ for ( i = 0; i < 2 * N * N; i++ ) {
+ A[ i ] = (float)random_uniform( -10.0, 10.0 );
+ B[ i ] = 0.0f;
+ }
+ t = tic();
+ for ( i = 0; i < iterations; i++ ) {
+ // cppcheck-suppress uninitvar
+ stdlib_strided_ctril_ndarray( N, N, 0, (stdlib_complex64_t *)A, N, 1, 0, (stdlib_complex64_t *)B, N, 1, 0 );
+ if ( B[ 0 ] != B[ 0 ] ) {
+ printf( "should not return NaN\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( B[ 0 ] != B[ 0 ] ) {
+ printf( "should not return NaN\n" );
+ }
+ free( A );
+ free( B );
+ return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+ double elapsed;
+ int count;
+ int iter;
+ int len;
+ int N;
+ int i;
+ int j;
+
+ // Use the current time to seed the random number generator:
+ srand( time( NULL ) );
+
+ print_version();
+ count = 0;
+ for ( i = MIN; i <= MAX; i++ ) {
+ len = pow( 10, i );
+ N = (int)sqrt( (double)len );
+ iter = ITERATIONS / pow( 10, i-1 );
+ for ( j = 0; j < REPEATS; j++ ) {
+ count += 1;
+ printf( "# c::%s::square_matrix:order=row-major,size=%d\n", NAME, N*N );
+ elapsed = benchmark1( iter, N );
+ print_results( iter, elapsed );
+ printf( "ok %d benchmark finished\n", count );
+ }
+ }
+ for ( i = MIN; i <= MAX; i++ ) {
+ len = pow( 10, i );
+ N = (int)sqrt( (double)len );
+ iter = ITERATIONS / pow( 10, i-1 );
+ for ( j = 0; j < REPEATS; j++ ) {
+ count += 1;
+ printf( "# c::%s::square_matrix:ndarray:order=row-major,size=%d\n", NAME, N*N );
+ elapsed = benchmark2( iter, N );
+ print_results( iter, elapsed );
+ printf( "ok %d benchmark finished\n", count );
+ }
+ }
+ print_summary( count, count );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/binding.gyp b/lib/node_modules/@stdlib/blas/ext/base/ctril/binding.gyp
new file mode 100644
index 000000000000..0d6508a12e99
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/binding.gyp
@@ -0,0 +1,170 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A `.gyp` file for building a Node.js native add-on.
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # List of files to include in this file:
+ 'includes': [
+ './include.gypi',
+ ],
+
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Target name should match the add-on export name:
+ 'addon_target_name%': 'addon',
+
+ # Set variables based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="win"',
+ {
+ # Define the object file suffix:
+ 'obj': 'obj',
+ },
+ {
+ # Define the object file suffix:
+ 'obj': 'o',
+ }
+ ], # end condition (OS=="win")
+ ], # end conditions
+ }, # end variables
+
+ # Define compile targets:
+ 'targets': [
+
+ # Target to generate an add-on:
+ {
+ # The target name should match the add-on export name:
+ 'target_name': '<(addon_target_name)',
+
+ # Define dependencies:
+ 'dependencies': [],
+
+ # Define directories which contain relevant include headers:
+ 'include_dirs': [
+ # Local include directory:
+ '<@(include_dirs)',
+ ],
+
+ # List of source files:
+ 'sources': [
+ '<@(src_files)',
+ ],
+
+ # Settings which should be applied when a target's object files are used as linker input:
+ 'link_settings': {
+ # Define libraries:
+ 'libraries': [
+ '<@(libraries)',
+ ],
+
+ # Define library directories:
+ 'library_dirs': [
+ '<@(library_dirs)',
+ ],
+ },
+
+ # C/C++ compiler flags:
+ 'cflags': [
+ # Enable commonly used warning options:
+ '-Wall',
+
+ # Aggressive optimization:
+ '-O3',
+ ],
+
+ # C specific compiler flags:
+ 'cflags_c': [
+ # Specify the C standard to which a program is expected to conform:
+ '-std=c99',
+ ],
+
+ # C++ specific compiler flags:
+ 'cflags_cpp': [
+ # Specify the C++ standard to which a program is expected to conform:
+ '-std=c++11',
+ ],
+
+ # Linker flags:
+ 'ldflags': [],
+
+ # Apply conditions based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="mac"',
+ {
+ # Linker flags:
+ 'ldflags': [
+ '-undefined dynamic_lookup',
+ '-Wl,-no-pie',
+ '-Wl,-search_paths_first',
+ ],
+ },
+ ], # end condition (OS=="mac")
+ [
+ 'OS!="win"',
+ {
+ # C/C++ flags:
+ 'cflags': [
+ # Generate platform-independent code:
+ '-fPIC',
+ ],
+ },
+ ], # end condition (OS!="win")
+ ], # end conditions
+ }, # end target <(addon_target_name)
+
+ # Target to copy a generated add-on to a standard location:
+ {
+ 'target_name': 'copy_addon',
+
+ # Declare that the output of this target is not linked:
+ 'type': 'none',
+
+ # Define dependencies:
+ 'dependencies': [
+ # Require that the add-on be generated before building this target:
+ '<(addon_target_name)',
+ ],
+
+ # Define a list of actions:
+ 'actions': [
+ {
+ 'action_name': 'copy_addon',
+ 'message': 'Copying addon...',
+
+ # Explicitly list the inputs in the command-line invocation below:
+ 'inputs': [],
+
+ # Declare the expected outputs:
+ 'outputs': [
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+
+ # Define the command-line invocation:
+ 'action': [
+ 'cp',
+ '<(PRODUCT_DIR)/<(addon_target_name).node',
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+ },
+ ], # end actions
+ }, # end target copy_addon
+ ], # end targets
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/repl.txt
new file mode 100644
index 000000000000..161b26cc08b5
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/repl.txt
@@ -0,0 +1,113 @@
+
+{{alias}}( order, M, N, k, A, LDA, B, LDB )
+ Copies the lower triangular part of a single-precision complex floating-
+ point matrix `A` to another matrix `B`.
+
+ Indexing is relative to the first index. To introduce an offset, use typed
+ array views.
+
+ The diagonal parameter `k` specifies the diagonal above which to ignore. A
+ value of `k = 0` refers to the main diagonal, `k < 0` refers to a diagonal
+ below the main diagonal, and `k > 0` refers to a diagonal above the main
+ diagonal.
+
+ Parameters
+ ----------
+ order: string
+ Row-major (C-style) or column-major (Fortran-style) order. Must be
+ either 'row-major' or 'column-major'.
+
+ M: integer
+ Number of rows in `A`.
+
+ N: integer
+ Number of columns in `A`.
+
+ k: integer
+ Diagonal above which to ignore.
+
+ A: Complex64Array
+ Input matrix `A`.
+
+ LDA: integer
+ Stride of the first dimension of `A` (a.k.a., leading dimension of the
+ matrix `A`).
+
+ B: Complex64Array
+ Output matrix `B`.
+
+ LDB: integer
+ Stride of the first dimension of `B` (a.k.a., leading dimension of the
+ matrix `B`).
+
+ Returns
+ -------
+ B: Complex64Array
+ Output matrix.
+
+ Examples
+ --------
+ > var A = new {{alias:@stdlib/array/complex64}}( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+ > var B = new {{alias:@stdlib/array/complex64}}( 4 );
+ > {{alias}}( 'row-major', 2, 2, 0, A, 2, B, 2 )
+ [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+
+
+{{alias}}.ndarray( M, N, k, A, sa1, sa2, oa, B, sb1, sb2, ob )
+ Copies the lower triangular part of a single-precision complex floating-
+ point matrix `A` to another matrix `B` using alternative indexing semantics.
+
+ While typed array views mandate a view offset based on the underlying
+ buffer, the offset parameters support indexing semantics based on starting
+ indices.
+
+ Parameters
+ ----------
+ M: integer
+ Number of rows in `A`.
+
+ N: integer
+ Number of columns in `A`.
+
+ k: integer
+ Diagonal above which to ignore.
+
+ A: Complex64Array
+ Input matrix `A`.
+
+ sa1: integer
+ Stride of the first dimension of `A`.
+
+ sa2: integer
+ Stride of the second dimension of `A`.
+
+ oa: integer
+ Starting index for `A`.
+
+ B: Complex64Array
+ Output matrix `B`.
+
+ sb1: integer
+ Stride of the first dimension of `B`.
+
+ sb2: integer
+ Stride of the second dimension of `B`.
+
+ ob: integer
+ Starting index for `B`.
+
+ Returns
+ -------
+ B: Complex64Array
+ Output matrix.
+
+ Examples
+ --------
+ > var A = new {{alias:@stdlib/array/complex64}}( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+ > var B = new {{alias:@stdlib/array/complex64}}( 4 );
+ > {{alias}}.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 )
+ [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+
+ See Also
+ --------
+
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/types/index.d.ts
new file mode 100644
index 000000000000..c0bb920dc0ae
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/types/index.d.ts
@@ -0,0 +1,118 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+// TypeScript Version: 4.1
+
+///
+
+import { Layout } from '@stdlib/types/blas';
+import { Complex64Array } from '@stdlib/types/array';
+
+/**
+* Interface describing `ctril`.
+*/
+interface Routine {
+ /**
+ * Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+ *
+ * @param order - storage layout of `A` and `B`
+ * @param M - number of rows in matrix `A`
+ * @param N - number of columns in matrix `A`
+ * @param k - diagonal above which to ignore
+ * @param A - input matrix
+ * @param LDA - stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`)
+ * @param B - output matrix
+ * @param LDB - stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`)
+ * @returns `B`
+ *
+ * @example
+ * var Complex64Array = require( '@stdlib/array/complex64' );
+ *
+ * var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+ * var B = new Complex64Array( 4 );
+ *
+ * ctril( 'row-major', 2, 2, 0, A, 2, B, 2 );
+ * // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+ */
+ ( order: Layout, M: number, N: number, k: number, A: Complex64Array, LDA: number, B: Complex64Array, LDB: number ): Complex64Array;
+
+ /**
+ * Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B` using alternative indexing semantics.
+ *
+ * @param M - number of rows in matrix `A`
+ * @param N - number of columns in matrix `A`
+ * @param k - diagonal above which to ignore
+ * @param A - input matrix
+ * @param strideA1 - stride of the first dimension of `A`
+ * @param strideA2 - stride of the second dimension of `A`
+ * @param offsetA - starting index for `A`
+ * @param B - output matrix
+ * @param strideB1 - stride of the first dimension of `B`
+ * @param strideB2 - stride of the second dimension of `B`
+ * @param offsetB - starting index for `B`
+ * @returns `B`
+ *
+ * @example
+ * var Complex64Array = require( '@stdlib/array/complex64' );
+ *
+ * var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+ * var B = new Complex64Array( 4 );
+ *
+ * ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+ * // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+ */
+ ndarray( M: number, N: number, k: number, A: Complex64Array, strideA1: number, strideA2: number, offsetA: number, B: Complex64Array, strideB1: number, strideB2: number, offsetB: number ): Complex64Array;
+}
+
+/**
+* Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+*
+* @param order - storage layout of `A` and `B`
+* @param M - number of rows in matrix `A`
+* @param N - number of columns in matrix `A`
+* @param k - diagonal above which to ignore
+* @param A - input matrix
+* @param LDA - stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`)
+* @param B - output matrix
+* @param LDB - stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`)
+* @returns `B`
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 'row-major', 2, 2, 0, A, 2, B, 2 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*/
+declare var ctril: Routine;
+
+
+// EXPORTS //
+
+export = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/types/test.ts b/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/types/test.ts
new file mode 100644
index 000000000000..37c1ec316811
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/docs/types/test.ts
@@ -0,0 +1,355 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import Complex64Array = require( '@stdlib/array/complex64' );
+import ctril = require( './index' );
+
+
+// TESTS //
+
+// The function returns a Complex64Array...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', 2, 2, 0, A, 2, B, 2 ); // $ExpectType Complex64Array
+}
+
+// The compiler throws an error if the function is provided a first argument which is not a valid order...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 5, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( true, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( false, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( null, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( void 0, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( [], 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( {}, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( ( x: number ): number => x, 2, 2, 0, A, 2, B, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', '5', 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', true, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', false, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', null, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', void 0, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', [], 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', {}, 2, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', ( x: number ): number => x, 2, 0, A, 2, B, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a third argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', 2, '5', 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, true, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, false, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, null, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, void 0, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, [], 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, {}, 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, ( x: number ): number => x, 0, A, 2, B, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a fourth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', 2, 2, '5', A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, true, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, false, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, null, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, void 0, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, [], A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, {}, A, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, ( x: number ): number => x, A, 2, B, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a fifth argument which is not a Complex64Array...
+{
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', 2, 2, 0, 5, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, true, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, false, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, null, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, void 0, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, [], 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, {}, 2, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, ( x: number ): number => x, 2, B, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a sixth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', 2, 2, 0, A, '5', B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, true, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, false, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, null, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, void 0, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, [], B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, {}, B, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, ( x: number ): number => x, B, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a seventh argument which is not a Complex64Array...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+
+ ctril( 'row-major', 2, 2, 0, A, 2, 5, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, true, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, false, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, null, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, void 0, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, [], 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, {}, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, ( x: number ): number => x, 2 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an eighth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril( 'row-major', 2, 2, 0, A, 2, B, '5' ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, true ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, false ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, null ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, void 0 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, [] ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, {} ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril(); // $ExpectError
+ ctril( 'row-major' ); // $ExpectError
+ ctril( 'row-major', 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2 ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B ); // $ExpectError
+ ctril( 'row-major', 2, 2, 0, A, 2, B, 2, 10 ); // $ExpectError
+}
+
+// Attached to main export is an `ndarray` method which returns a Complex64Array...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectType Complex64Array
+}
+
+// The compiler throws an error if the `ndarray` method is provided a first argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( '5', 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( true, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( false, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( null, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( void 0, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( [], 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( {}, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( ( x: number ): number => x, 2, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a second argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, '5', 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, true, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, false, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, null, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, void 0, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, [], 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, {}, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, ( x: number ): number => x, 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a third argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, '5', A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, true, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, false, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, null, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, void 0, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, [], A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, {}, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, ( x: number ): number => x, A, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a fourth argument which is not a Complex64Array...
+{
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, 5, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, true, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, false, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, null, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, void 0, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, [], 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, {}, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, ( x: number ): number => x, 2, 1, 0, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a fifth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, '5', 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, true, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, false, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, null, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, void 0, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, [], 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, {}, 1, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, ( x: number ): number => x, 1, 0, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a sixth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, '5', 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, true, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, false, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, null, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, void 0, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, [], 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, {}, 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, ( x: number ): number => x, 0, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a seventh argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, 1, '5', B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, true, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, false, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, null, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, void 0, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, [], B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, {}, B, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, ( x: number ): number => x, B, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided an eighth argument which is not a Complex64Array...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, 5, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, true, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, false, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, null, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, void 0, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, [], 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, {}, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, ( x: number ): number => x, 2, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a ninth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, '5', 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, true, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, false, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, null, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, void 0, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, [], 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, {}, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, ( x: number ): number => x, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a tenth argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, '5', 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, true, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, false, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, null, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, void 0, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, [], 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, {}, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, ( x: number ): number => x, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided an eleventh argument which is not a number...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, '5' ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, true ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, false ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, null ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, void 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, [] ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, {} ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided an unsupported number of arguments...
+{
+ const A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ const B = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] );
+
+ ctril.ndarray(); // $ExpectError
+ ctril.ndarray( 2 ); // $ExpectError
+ ctril.ndarray( 2, 2 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1 ); // $ExpectError
+ ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0, 0 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/c/Makefile
new file mode 100644
index 000000000000..c8f8e9a1517b
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := example.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled examples.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/c/example.c b/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/c/example.c
new file mode 100644
index 000000000000..23ca19119e20
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/c/example.c
@@ -0,0 +1,56 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ctril.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/complex/float32/ctor.h"
+#include
+
+int main( void ) {
+ // Define a 3x3 input matrix stored in row-major order:
+ const float A[ 3*3*2 ] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f };
+
+ // Define a 3x3 output matrix:
+ float B[ 3*3*2 ] = { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
+
+ // Specify the number of elements along each dimension of `A`:
+ const CBLAS_INT M = 3;
+ const CBLAS_INT N = 3;
+
+ // Copy the lower triangular part of `A` to `B`:
+ stdlib_strided_ctril( CblasRowMajor, M, N, 0, (stdlib_complex64_t *)A, N, (stdlib_complex64_t *)B, N );
+
+ // Print the result:
+ for ( int i = 0; i < M; i++ ) {
+ for ( int j = 0; j < N; j++ ) {
+ int idx = ( (i*N) + j ) * 2;
+ printf( "B[ %i,%i ] = %f + %fi\n", i, j, B[ idx ], B[ idx+1 ] );
+ }
+ }
+
+ // Copy the lower triangular part of `A`, including the first sub-diagonal, to `B` using alternative indexing semantics:
+ stdlib_strided_ctril_ndarray( M, N, -1, (stdlib_complex64_t *)A, N, 1, 0, (stdlib_complex64_t *)B, N, 1, 0 );
+
+ // Print the result:
+ for ( int i = 0; i < M; i++ ) {
+ for ( int j = 0; j < N; j++ ) {
+ int idx = ( (i*N) + j ) * 2;
+ printf( "B[ %i,%i ] = %f + %fi\n", i, j, B[ idx ], B[ idx+1 ] );
+ }
+ }
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/index.js
new file mode 100644
index 000000000000..a2db87052d80
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/examples/index.js
@@ -0,0 +1,44 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var ndarray2array = require( '@stdlib/ndarray/base/to-array' );
+var uniform = require( '@stdlib/random/array/discrete-uniform' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var numel = require( '@stdlib/ndarray/base/numel' );
+var shape2strides = require( '@stdlib/ndarray/base/shape2strides' );
+var ctril = require( './../lib' );
+
+var shape = [ 5, 8 ];
+var order = 'row-major';
+var strides = shape2strides( shape, order );
+
+var N = numel( shape );
+
+var opts = {
+ 'dtype': 'float32'
+};
+var A = new Complex64Array( uniform( N*2, -10, 10, opts ) );
+console.log( ndarray2array( A, shape, strides, 0, order ) );
+
+var B = new Complex64Array( uniform( N*2, -10, 10, opts ) );
+console.log( ndarray2array( B, shape, strides, 0, order ) );
+
+ctril( order, shape[ 0 ], shape[ 1 ], 0, A, strides[ 0 ], B, strides[ 0 ] );
+console.log( ndarray2array( B, shape, strides, 0, order ) );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/include.gypi b/lib/node_modules/@stdlib/blas/ext/base/ctril/include.gypi
new file mode 100644
index 000000000000..bee8d41a2caf
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A GYP include file for building a Node.js native add-on.
+#
+# Main documentation:
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Source directory:
+ 'src_dir': './src',
+
+ # Include directories:
+ 'include_dirs': [
+ ' [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 2, 2, 1, A, 2, 1, 0, B, 2, 1, 0 );
+* // B => [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ]
+*/
+function ctril( M, N, k, A, strideA1, strideA2, offsetA, B, strideB1, strideB2, offsetB ) {
+ var viewA;
+ var viewB;
+ var sa1;
+ var sa2;
+ var sb1;
+ var sb2;
+ var ia;
+ var ib;
+ var ja;
+ var jb;
+ var i0;
+ var i1;
+
+ viewA = reinterpret( A, 0 );
+ viewB = reinterpret( B, 0 );
+
+ sa1 = strideA1 * 2;
+ sa2 = strideA2 * 2;
+ sb1 = strideB1 * 2;
+ sb2 = strideB2 * 2;
+ ia = offsetA * 2;
+ ib = offsetB * 2;
+ if ( isRowMajor( [ strideA1, strideA2 ] ) ) {
+ for ( i1 = 0; i1 < M; i1++ ) {
+ for ( i0 = 0; i0 <= min( i1+k, N-1 ); i0++ ) {
+ ja = ia + ( i0*sa2 );
+ jb = ib + ( i0*sb2 );
+ viewB[ jb ] = viewA[ ja ];
+ viewB[ jb+1 ] = viewA[ ja+1 ];
+ }
+ ia += sa1;
+ ib += sb1;
+ }
+ return B;
+ }
+ for ( i1 = 0; i1 < N; i1++ ) {
+ for ( i0 = max( 0, i1-k ); i0 < M; i0++ ) {
+ ja = ia + ( i0*sa1 );
+ jb = ib + ( i0*sb1 );
+ viewB[ jb ] = viewA[ ja ];
+ viewB[ jb+1 ] = viewA[ ja+1 ];
+ }
+ ia += sa2;
+ ib += sb2;
+ }
+ return B;
+}
+
+
+// EXPORTS //
+
+module.exports = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ctril.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ctril.js
new file mode 100644
index 000000000000..4f209ce3e5dd
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ctril.js
@@ -0,0 +1,105 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var isLayout = require( '@stdlib/blas/base/assert/is-layout' );
+var isRowMajor = require( '@stdlib/ndarray/base/assert/is-row-major-string' );
+var max = require( '@stdlib/math/base/special/fast/max' );
+var format = require( '@stdlib/string/format' );
+var base = require( './base.js' );
+
+
+// MAIN //
+
+/**
+* Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+*
+* @param {string} order - storage layout of `A` and `B`
+* @param {NonNegativeInteger} M - number of rows in matrix `A`
+* @param {NonNegativeInteger} N - number of columns in matrix `A`
+* @param {integer} k - diagonal above which to ignore
+* @param {Complex64Array} A - input matrix
+* @param {PositiveInteger} LDA - stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`)
+* @param {Complex64Array} B - output matrix
+* @param {PositiveInteger} LDB - stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`)
+* @throws {TypeError} first argument must be a valid order
+* @throws {RangeError} sixth argument must be a valid stride
+* @throws {RangeError} eighth argument must be a valid stride
+* @returns {Complex64Array} `B`
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 'row-major', 2, 2, 0, A, 2, B, 2 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 'row-major', 2, 2, 1, A, 2, B, 2 );
+* // B => [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ]
+*/
+function ctril( order, M, N, k, A, LDA, B, LDB ) {
+ var isrm;
+ var sa1;
+ var sa2;
+ var sb1;
+ var sb2;
+ var s;
+ if ( !isLayout( order ) ) {
+ throw new TypeError( format( 'invalid argument. First argument must be a valid order. Value: `%s`.', order ) );
+ }
+ isrm = isRowMajor( order );
+ if ( isrm ) {
+ s = N;
+ } else {
+ s = M;
+ }
+ if ( LDA < max( 1, s ) ) {
+ throw new RangeError( format( 'invalid argument. Sixth argument must be greater than or equal to max(1,%d). Value: `%d`.', s, LDA ) );
+ }
+ if ( LDB < max( 1, s ) ) {
+ throw new RangeError( format( 'invalid argument. Eighth argument must be greater than or equal to max(1,%d). Value: `%d`.', s, LDB ) );
+ }
+ if ( isrm ) {
+ sa1 = LDA;
+ sa2 = 1;
+ sb1 = LDB;
+ sb2 = 1;
+ } else { // order === 'column-major'
+ sa1 = 1;
+ sa2 = LDA;
+ sb1 = 1;
+ sb2 = LDB;
+ }
+ return base( M, N, k, A, sa1, sa2, 0, B, sb1, sb2, 0 );
+}
+
+
+// EXPORTS //
+
+module.exports = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ctril.native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ctril.native.js
new file mode 100644
index 000000000000..0220b7f6d592
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ctril.native.js
@@ -0,0 +1,86 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var isLayout = require( '@stdlib/blas/base/assert/is-layout' );
+var isRowMajor = require( '@stdlib/ndarray/base/assert/is-row-major-string' );
+var resolveOrder = require( '@stdlib/blas/base/layout-resolve-enum' );
+var max = require( '@stdlib/math/base/special/fast/max' );
+var format = require( '@stdlib/string/format' );
+var reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
+var addon = require( './../src/addon.node' );
+
+
+// MAIN //
+
+/**
+* Copies the lower triangular part of a single-precision floating-point matrix `A` to another matrix `B`.
+*
+* @param {string} order - storage layout of `A` and `B`
+* @param {NonNegativeInteger} M - number of rows in matrix `A`
+* @param {NonNegativeInteger} N - number of columns in matrix `A`
+* @param {integer} k - diagonal above which to ignore
+* @param {Complex64Array} A - input matrix
+* @param {PositiveInteger} LDA - stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`)
+* @param {Complex64Array} B - output matrix
+* @param {PositiveInteger} LDB - stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`)
+* @throws {TypeError} first argument must be a valid order
+* @throws {RangeError} sixth argument must be a valid stride
+* @throws {RangeError} eighth argument must be a valid stride
+* @returns {Complex64Array} `B`
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 'row-major', 2, 2, 0, A, 2, B, 2 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*/
+function ctril( order, M, N, k, A, LDA, B, LDB ) {
+ var viewA;
+ var viewB;
+ var s;
+ if ( !isLayout( order ) ) {
+ throw new TypeError( format( 'invalid argument. First argument must be a valid order. Value: `%s`.', order ) );
+ }
+ if ( isRowMajor( order ) ) {
+ s = N;
+ } else {
+ s = M;
+ }
+ if ( LDA < max( 1, s ) ) {
+ throw new RangeError( format( 'invalid argument. Sixth argument must be greater than or equal to max(1,%d). Value: `%d`.', s, LDA ) );
+ }
+ if ( LDB < max( 1, s ) ) {
+ throw new RangeError( format( 'invalid argument. Eighth argument must be greater than or equal to max(1,%d). Value: `%d`.', s, LDB ) );
+ }
+ viewA = reinterpret( A, 0 );
+ viewB = reinterpret( B, 0 );
+ addon( resolveOrder( order ), M, N, k, viewA, LDA, viewB, LDB );
+ return B;
+}
+
+
+// EXPORTS //
+
+module.exports = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/index.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/index.js
new file mode 100644
index 000000000000..cb95145deb2e
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/index.js
@@ -0,0 +1,70 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/**
+* Copy the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+*
+* @module @stdlib/blas/ext/base/ctril
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+* var ctril = require( '@stdlib/blas/ext/base/ctril' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 'row-major', 2, 2, 0, A, 2, B, 2 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+* var ctril = require( '@stdlib/blas/ext/base/ctril' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril.ndarray( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*/
+
+// MODULES //
+
+var join = require( 'path' ).join;
+var tryRequire = require( '@stdlib/utils/try-require' );
+var isError = require( '@stdlib/assert/is-error' );
+var main = require( './main.js' );
+
+
+// MAIN //
+
+var ctril;
+var tmp = tryRequire( join( __dirname, './native.js' ) );
+if ( isError( tmp ) ) {
+ ctril = main;
+} else {
+ ctril = tmp;
+}
+
+
+// EXPORTS //
+
+module.exports = ctril;
+
+// exports: { "ndarray": "ctril.ndarray" }
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/main.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/main.js
new file mode 100644
index 000000000000..20d96f1fef2e
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/main.js
@@ -0,0 +1,35 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var ctril = require( './ctril.js' );
+var ndarray = require( './ndarray.js' );
+
+
+// MAIN //
+
+setReadOnly( ctril, 'ndarray', ndarray );
+
+
+// EXPORTS //
+
+module.exports = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/native.js
new file mode 100644
index 000000000000..880a3fd317bd
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/native.js
@@ -0,0 +1,35 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var main = require( './ctril.native.js' );
+var ndarray = require( './ndarray.native.js' );
+
+
+// MAIN //
+
+setReadOnly( main, 'ndarray', ndarray );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ndarray.js
new file mode 100644
index 000000000000..150312cbbbd4
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ndarray.js
@@ -0,0 +1,69 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var base = require( './base.js' );
+
+
+// MAIN //
+
+/**
+* Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B` using alternative indexing semantics.
+*
+* @param {NonNegativeInteger} M - number of rows in matrix `A`
+* @param {NonNegativeInteger} N - number of columns in matrix `A`
+* @param {integer} k - diagonal above which to ignore
+* @param {Complex64Array} A - input matrix
+* @param {integer} strideA1 - stride of the first dimension of `A`
+* @param {integer} strideA2 - stride of the second dimension of `A`
+* @param {NonNegativeInteger} offsetA - starting index for `A`
+* @param {Complex64Array} B - output matrix
+* @param {integer} strideB1 - stride of the first dimension of `B`
+* @param {integer} strideB2 - stride of the second dimension of `B`
+* @param {NonNegativeInteger} offsetB - starting index for `B`
+* @returns {Complex64Array} `B`
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 2, 2, -1, A, 2, 1, 0, B, 2, 1, 0 );
+* // B => [ 0.0, 0.0, 0.0, 0.0, 5.0, 6.0, 0.0, 0.0 ]
+*/
+function ctril( M, N, k, A, strideA1, strideA2, offsetA, B, strideB1, strideB2, offsetB ) { // eslint-disable-line max-len, max-params
+ return base( M, N, k, A, strideA1, strideA2, offsetA, B, strideB1, strideB2, offsetB ); // eslint-disable-line max-len
+}
+
+
+// EXPORTS //
+
+module.exports = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ndarray.native.js
new file mode 100644
index 000000000000..c603db358493
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/lib/ndarray.native.js
@@ -0,0 +1,64 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
+var addon = require( './../src/addon.node' );
+
+
+// MAIN //
+
+/**
+* Copies the lower triangular part of a single-precision floating-point matrix `A` to another matrix `B` using alternative indexing semantics.
+*
+* @param {NonNegativeInteger} M - number of rows in matrix `A`
+* @param {NonNegativeInteger} N - number of columns in matrix `A`
+* @param {integer} k - diagonal above which to ignore
+* @param {Complex64Array} A - input matrix
+* @param {integer} strideA1 - stride of the first dimension of `A`
+* @param {integer} strideA2 - stride of the second dimension of `A`
+* @param {NonNegativeInteger} offsetA - starting index for `A`
+* @param {Complex64Array} B - output matrix
+* @param {integer} strideB1 - stride of the first dimension of `B`
+* @param {integer} strideB2 - stride of the second dimension of `B`
+* @param {NonNegativeInteger} offsetB - starting index for `B`
+* @returns {Complex64Array} `B`
+*
+* @example
+* var Complex64Array = require( '@stdlib/array/complex64' );
+*
+* var A = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+* var B = new Complex64Array( 4 );
+*
+* ctril( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+* // B => [ 1.0, 2.0, 0.0, 0.0, 5.0, 6.0, 7.0, 8.0 ]
+*/
+function ctril( M, N, k, A, strideA1, strideA2, offsetA, B, strideB1, strideB2, offsetB ) { // eslint-disable-line max-len, max-params
+ var viewA = reinterpret( A, 0 );
+ var viewB = reinterpret( B, 0 );
+ addon.ndarray( M, N, k, viewA, strideA1, strideA2, offsetA, viewB, strideB1, strideB2, offsetB ); // eslint-disable-line max-len
+ return B;
+}
+
+
+// EXPORTS //
+
+module.exports = ctril;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/manifest.json b/lib/node_modules/@stdlib/blas/ext/base/ctril/manifest.json
new file mode 100644
index 000000000000..e6bb20543ae9
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/manifest.json
@@ -0,0 +1,82 @@
+{
+ "options": {
+ "task": "build"
+ },
+ "fields": [
+ {
+ "field": "src",
+ "resolve": true,
+ "relative": true
+ },
+ {
+ "field": "include",
+ "resolve": true,
+ "relative": true
+ },
+ {
+ "field": "libraries",
+ "resolve": false,
+ "relative": false
+ },
+ {
+ "field": "libpath",
+ "resolve": true,
+ "relative": false
+ }
+ ],
+ "confs": [
+ {
+ "task": "build",
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/ndarray/base/assert/is-row-major",
+ "@stdlib/napi/export",
+ "@stdlib/napi/argv",
+ "@stdlib/napi/argv-int64",
+ "@stdlib/napi/argv-int32",
+ "@stdlib/napi/argv-strided-complex64array2d",
+ "@stdlib/complex/float32/ctor"
+ ]
+ },
+ {
+ "task": "benchmark",
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/ndarray/base/assert/is-row-major",
+ "@stdlib/complex/float32/ctor"
+ ]
+ },
+ {
+ "task": "examples",
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/ndarray/base/assert/is-row-major",
+ "@stdlib/complex/float32/ctor"
+ ]
+ }
+ ]
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/package.json b/lib/node_modules/@stdlib/blas/ext/base/ctril/package.json
new file mode 100644
index 000000000000..eef54fdfbf02
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/package.json
@@ -0,0 +1,79 @@
+{
+ "name": "@stdlib/blas/ext/base/ctril",
+ "version": "0.0.0",
+ "description": "Copy the lower triangular part of a single-precision complex floating-point matrix A to another matrix B.",
+ "license": "Apache-2.0",
+ "author": {
+ "name": "The Stdlib Authors",
+ "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+ },
+ "contributors": [
+ {
+ "name": "The Stdlib Authors",
+ "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+ }
+ ],
+ "main": "./lib",
+ "browser": "./lib/main.js",
+ "gypfile": true,
+ "directories": {
+ "benchmark": "./benchmark",
+ "doc": "./docs",
+ "example": "./examples",
+ "include": "./include",
+ "lib": "./lib",
+ "src": "./src",
+ "test": "./test"
+ },
+ "types": "./docs/types",
+ "scripts": {},
+ "homepage": "https://github.com/stdlib-js/stdlib",
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/stdlib-js/stdlib.git"
+ },
+ "bugs": {
+ "url": "https://github.com/stdlib-js/stdlib/issues"
+ },
+ "dependencies": {},
+ "devDependencies": {},
+ "engines": {
+ "node": ">=0.10.0",
+ "npm": ">2.7.0"
+ },
+ "os": [
+ "aix",
+ "darwin",
+ "freebsd",
+ "linux",
+ "macos",
+ "openbsd",
+ "sunos",
+ "win32",
+ "windows"
+ ],
+ "keywords": [
+ "stdlib",
+ "blas",
+ "extended",
+ "ext",
+ "linear",
+ "algebra",
+ "matrix",
+ "triangular",
+ "triangle",
+ "lower",
+ "tril",
+ "ctril",
+ "copy",
+ "array",
+ "ndarray",
+ "complex64",
+ "complex",
+ "single",
+ "complex64array"
+ ],
+ "__stdlib__": {
+ "wasm": false
+ }
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/src/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ctril/src/Makefile
new file mode 100644
index 000000000000..2caf905cedbe
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/src/Makefile
@@ -0,0 +1,70 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+
+# RULES #
+
+#/
+# Removes generated files for building an add-on.
+#
+# @example
+# make clean-addon
+#/
+clean-addon:
+ $(QUIET) -rm -f *.o *.node
+
+.PHONY: clean-addon
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean: clean-addon
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/src/addon.c b/lib/node_modules/@stdlib/blas/ext/base/ctril/src/addon.c
new file mode 100644
index 000000000000..620d4de49c1a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/src/addon.c
@@ -0,0 +1,100 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ctril.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/napi/export.h"
+#include "stdlib/napi/argv.h"
+#include "stdlib/napi/argv_int64.h"
+#include "stdlib/napi/argv_int32.h"
+#include "stdlib/napi/argv_strided_complex64array2d.h"
+#include
+
+/**
+* Receives JavaScript callback invocation data.
+*
+* @param env environment under which the function is invoked
+* @param info callback data
+* @return Node-API value
+*/
+static napi_value addon( napi_env env, napi_callback_info info ) {
+ CBLAS_INT sa1;
+ CBLAS_INT sa2;
+ CBLAS_INT sb1;
+ CBLAS_INT sb2;
+
+ STDLIB_NAPI_ARGV( env, info, argv, argc, 8 );
+
+ STDLIB_NAPI_ARGV_INT32( env, layout, argv, 0 );
+
+ STDLIB_NAPI_ARGV_INT64( env, M, argv, 1 );
+ STDLIB_NAPI_ARGV_INT64( env, N, argv, 2 );
+ STDLIB_NAPI_ARGV_INT64( env, k, argv, 3 );
+ STDLIB_NAPI_ARGV_INT64( env, LDA, argv, 5 );
+ STDLIB_NAPI_ARGV_INT64( env, LDB, argv, 7 );
+
+ if ( layout == CblasColMajor ) {
+ sa1 = 1;
+ sa2 = LDA;
+ sb1 = 1;
+ sb2 = LDB;
+ } else { // layout == CblasRowMajor
+ sa1 = LDA;
+ sa2 = 1;
+ sb1 = LDB;
+ sb2 = 1;
+ }
+ STDLIB_NAPI_ARGV_STRIDED_COMPLEX64ARRAY2D( env, A, M, N, sa1, sa2, argv, 4 );
+ STDLIB_NAPI_ARGV_STRIDED_COMPLEX64ARRAY2D( env, B, M, N, sb1, sb2, argv, 6 );
+
+ API_SUFFIX(stdlib_strided_ctril)( layout, M, N, k, (stdlib_complex64_t *)A, LDA, (stdlib_complex64_t *)B, LDB );
+
+ return NULL;
+}
+
+/**
+* Receives JavaScript callback invocation data.
+*
+* @param env environment under which the function is invoked
+* @param info callback data
+* @return Node-API value
+*/
+static napi_value addon_method( napi_env env, napi_callback_info info ) {
+ STDLIB_NAPI_ARGV( env, info, argv, argc, 11 );
+
+ STDLIB_NAPI_ARGV_INT64( env, M, argv, 0 );
+ STDLIB_NAPI_ARGV_INT64( env, N, argv, 1 );
+ STDLIB_NAPI_ARGV_INT64( env, k, argv, 2 );
+
+ STDLIB_NAPI_ARGV_INT64( env, strideA1, argv, 4 );
+ STDLIB_NAPI_ARGV_INT64( env, strideA2, argv, 5 );
+ STDLIB_NAPI_ARGV_INT64( env, offsetA, argv, 6 );
+
+ STDLIB_NAPI_ARGV_INT64( env, strideB1, argv, 8 );
+ STDLIB_NAPI_ARGV_INT64( env, strideB2, argv, 9 );
+ STDLIB_NAPI_ARGV_INT64( env, offsetB, argv, 10 );
+
+ STDLIB_NAPI_ARGV_STRIDED_COMPLEX64ARRAY2D( env, A, M, N, strideA1, strideA2, argv, 3 );
+ STDLIB_NAPI_ARGV_STRIDED_COMPLEX64ARRAY2D( env, B, M, N, strideB1, strideB2, argv, 7 );
+
+ API_SUFFIX(stdlib_strided_ctril_ndarray)( M, N, k, (stdlib_complex64_t *)A, strideA1, strideA2, offsetA, (stdlib_complex64_t *)B, strideB1, strideB2, offsetB );
+
+ return NULL;
+}
+
+STDLIB_NAPI_MODULE_EXPORT_FCN_WITH_METHOD( addon, "ndarray", addon_method )
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/src/main.c b/lib/node_modules/@stdlib/blas/ext/base/ctril/src/main.c
new file mode 100644
index 000000000000..03d81839d195
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/src/main.c
@@ -0,0 +1,108 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ctril.h"
+#include "stdlib/blas/base/shared.h"
+#include "stdlib/ndarray/base/assert/is_row_major.h"
+#include "stdlib/complex/float32/ctor.h"
+#include
+
+// Define macros for computing the minimum and maximum values:
+#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
+#define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
+
+/**
+* Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`.
+*
+* @param layout storage layout
+* @param M number of rows in the matrix `A`
+* @param N number of columns in the matrix `A`
+* @param k diagonal above which to ignore
+* @param A input matrix
+* @param LDA stride of the first dimension of `A` (a.k.a., leading dimension of the matrix `A`)
+* @param B output matrix
+* @param LDB stride of the first dimension of `B` (a.k.a., leading dimension of the matrix `B`)
+*/
+void API_SUFFIX(stdlib_strided_ctril)( const CBLAS_LAYOUT layout, const CBLAS_INT M, const CBLAS_INT N, const CBLAS_INT k, const stdlib_complex64_t *A, const CBLAS_INT LDA, stdlib_complex64_t *B, const CBLAS_INT LDB ) {
+ CBLAS_INT sa1;
+ CBLAS_INT sa2;
+ CBLAS_INT sb1;
+ CBLAS_INT sb2;
+
+ if ( layout == CblasColMajor ) {
+ sa1 = 1;
+ sa2 = LDA;
+ sb1 = 1;
+ sb2 = LDB;
+ } else { // layout == CblasRowMajor
+ sa1 = LDA;
+ sa2 = 1;
+ sb1 = LDB;
+ sb2 = 1;
+ }
+ API_SUFFIX(stdlib_strided_ctril_ndarray)( M, N, k, A, sa1, sa2, 0, B, sb1, sb2, 0 );
+}
+
+/**
+* Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B` using alternative indexing semantics.
+*
+* @param M number of rows in the matrix `A`
+* @param N number of columns in the matrix `A`
+* @param k diagonal above which to ignore
+* @param A input matrix
+* @param strideA1 stride of the first dimension of `A`
+* @param strideA2 stride of the second dimension of `A`
+* @param offsetA starting index for `A`
+* @param B output matrix
+* @param strideB1 stride of the first dimension of `B`
+* @param strideB2 stride of the second dimension of `B`
+* @param offsetB starting index for `B`
+*/
+void API_SUFFIX(stdlib_strided_ctril_ndarray)( const CBLAS_INT M, const CBLAS_INT N, const CBLAS_INT k, const stdlib_complex64_t *A, const CBLAS_INT strideA1, const CBLAS_INT strideA2, const CBLAS_INT offsetA, stdlib_complex64_t *B, const CBLAS_INT strideB1, const CBLAS_INT strideB2, const CBLAS_INT offsetB ) {
+ int64_t sa[ 2 ];
+ CBLAS_INT ia;
+ CBLAS_INT ib;
+ CBLAS_INT i0;
+ CBLAS_INT i1;
+
+ ia = offsetA;
+ ib = offsetB;
+
+ sa[ 0 ] = strideA1;
+ sa[ 1 ] = strideA2;
+ if ( stdlib_ndarray_is_row_major( 2, sa ) ) {
+ // Copy row-by-row in order to ensure cache-optimal traversal...
+ for ( i1 = 0; i1 < M; i1++ ) {
+ for ( i0 = 0; i0 <= MIN( i1+k, N-1 ); i0++ ) {
+ B[ ib+(i0*strideB2) ] = A[ ia+(i0*strideA2) ];
+ }
+ ia += strideA1;
+ ib += strideB1;
+ }
+ return;
+ }
+ // Copy column-by-column in order to ensure cache-optimal traversal...
+ for ( i1 = 0; i1 < N; i1++ ) {
+ for ( i0 = MAX( 0, i1-k ); i0 < M; i0++ ) {
+ B[ ib+(i0*strideB1) ] = A[ ia+(i0*strideA1) ];
+ }
+ ia += strideA2;
+ ib += strideB2;
+ }
+ return;
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ctril.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ctril.js
new file mode 100644
index 000000000000..519f8bec1688
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ctril.js
@@ -0,0 +1,377 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var isSameComplex64Array = require( '@stdlib/assert/is-same-complex64array' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var ctril = require( './../lib/ctril' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof ctril, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 8', function test( t ) {
+ t.strictEqual( ctril.length, 8, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function throws an error if provided an invalid first argument', function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ 'foo',
+ 'bar',
+ 'beep',
+ 'boop',
+ -5,
+ NaN,
+ true,
+ false,
+ null,
+ void 0,
+ [],
+ {},
+ function noop() {}
+ ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( value, 2, 2, 0, A, 2, B, 2 );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided a sixth argument which is not a valid LDA value (row-major)', function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'row-major', 2, 2, 0, A, value, B, 2 );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided an eighth argument which is not a valid LDB value (row-major)', function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'row-major', 2, 2, 0, A, 2, B, value );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided a sixth argument which is not a valid LDA value (column-major)', function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'column-major', 2, 2, 0, A, value, B, 2 );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided an eighth argument which is not a valid LDB value (column-major)', function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'column-major', 2, 2, 0, A, 2, B, value );
+ };
+ }
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k=0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'row-major', 3, 3, 0, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( out, B, 'returns expected value' );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k>0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'row-major', 3, 3, 1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k<0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'row-major', 3, 3, -1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 0.0, 0.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k=0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'column-major', 3, 3, 0, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k<0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'column-major', 3, 3, -1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 0.0, 0.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k>0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'column-major', 3, 3, 1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 6.0, 6.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (row-major)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'row-major', 2, 3, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'row-major', 3, 2, 0, A, 2, B, 2 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (column-major)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 2.0, 2.0, 5.0, 5.0, 3.0, 3.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'column-major', 2, 3, 0, A, 2, B, 2 );
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 0.0, 0.0, 5.0, 5.0, 0.0, 0.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ A = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 2.0, 2.0, 4.0, 4.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'column-major', 3, 2, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 0.0, 0.0, 4.0, 4.0, 6.0, 6.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports a leading dimension greater than the number of rows/columns (padded matrix)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 9.0, 9.0, 3.0, 3.0, 4.0, 4.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'row-major', 2, 2, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 3.0, 3.0, 4.0, 4.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ A = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 9.0, 9.0, 2.0, 2.0, 4.0, 4.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'column-major', 2, 2, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function leaves elements outside of the copied region unchanged', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( [ -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0 ] );
+
+ out = ctril( 'row-major', 3, 3, 0, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 4.0, 4.0, 5.0, 5.0, -1.0, -1.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is sufficiently negative, the function copies nothing', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+
+ out = ctril( 'row-major', 2, 2, 2, A, 2, B, 2 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is sufficiently positive, the function copies the entire matrix', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 'row-major', 2, 2, 2, A, 2, B, 2 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function leaves `B` unchanged when `M` or `N` is equal to zero', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ expected = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 'row-major', 0, 2, 0, A, 2, B, 2 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 'row-major', 2, 0, 0, A, 2, B, 2 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ctril.native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ctril.native.js
new file mode 100644
index 000000000000..89d62162d7ff
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ctril.native.js
@@ -0,0 +1,386 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var tape = require( 'tape' );
+var isSameComplex64Array = require( '@stdlib/assert/is-same-complex64array' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var ctril = tryRequire( resolve( __dirname, './../lib/ctril.native.js' ) );
+var opts = {
+ 'skip': ( ctril instanceof Error )
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof ctril, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 8', opts, function test( t ) {
+ t.strictEqual( ctril.length, 8, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function throws an error if provided an invalid first argument', opts, function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ 'foo',
+ 'bar',
+ 'beep',
+ 'boop',
+ -5,
+ NaN,
+ true,
+ false,
+ null,
+ void 0,
+ [],
+ {},
+ function noop() {}
+ ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( value, 2, 2, 0, A, 2, B, 2 );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided a sixth argument which is not a valid LDA value (row-major)', opts, function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'row-major', 2, 2, 0, A, value, B, 2 );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided an eighth argument which is not a valid LDB value (row-major)', opts, function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'row-major', 2, 2, 0, A, 2, B, value );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided a sixth argument which is not a valid LDA value (column-major)', opts, function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'column-major', 2, 2, 0, A, value, B, 2 );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided an eighth argument which is not a valid LDB value (column-major)', opts, function test( t ) {
+ var values;
+ var i;
+
+ values = [ 0, 1 ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided ' + values[ i ] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ var A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ var B = new Complex64Array( 4 );
+ ctril( 'column-major', 2, 2, 0, A, 2, B, value );
+ };
+ }
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k=0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'row-major', 3, 3, 0, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( out, B, 'returns expected value' );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k>0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'row-major', 3, 3, 1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k<0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'row-major', 3, 3, -1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 0.0, 0.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k=0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'column-major', 3, 3, 0, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k<0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'column-major', 3, 3, -1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 0.0, 0.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k>0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 'column-major', 3, 3, 1, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 6.0, 6.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (row-major)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'row-major', 2, 3, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'row-major', 3, 2, 0, A, 2, B, 2 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (column-major)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 2.0, 2.0, 5.0, 5.0, 3.0, 3.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'column-major', 2, 3, 0, A, 2, B, 2 );
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 0.0, 0.0, 5.0, 5.0, 0.0, 0.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ A = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 2.0, 2.0, 4.0, 4.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'column-major', 3, 2, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 0.0, 0.0, 4.0, 4.0, 6.0, 6.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports a leading dimension greater than the number of rows/columns (padded matrix)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 9.0, 9.0, 3.0, 3.0, 4.0, 4.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'row-major', 2, 2, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 3.0, 3.0, 4.0, 4.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ A = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 9.0, 9.0, 2.0, 2.0, 4.0, 4.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 'column-major', 2, 2, 0, A, 3, B, 3 );
+ expected = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function leaves elements outside of the copied region unchanged', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( [ -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0 ] );
+
+ out = ctril( 'row-major', 3, 3, 0, A, 3, B, 3 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 4.0, 4.0, 5.0, 5.0, -1.0, -1.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is greater than or equal to `N`, the function copies nothing', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+
+ out = ctril( 'row-major', 2, 2, 2, A, 2, B, 2 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is sufficiently negative, the function copies the entire matrix', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 'row-major', 2, 2, 2, A, 2, B, 2 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function leaves `B` unchanged when `M` or `N` is equal to zero', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ expected = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 'row-major', 0, 2, 0, A, 2, B, 2 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 'row-major', 2, 0, 0, A, 2, B, 2 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.js
new file mode 100644
index 000000000000..197ca27b5df8
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.js
@@ -0,0 +1,82 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var proxyquire = require( 'proxyquire' );
+var IS_BROWSER = require( '@stdlib/assert/is-browser' );
+var ctril = require( './../lib' );
+
+
+// VARIABLES //
+
+var opts = {
+ 'skip': IS_BROWSER
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof ctril, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'attached to the main export is a method providing an ndarray interface', function test( t ) {
+ t.strictEqual( typeof ctril.ndarray, 'function', 'method is a function' );
+ t.end();
+});
+
+tape( 'if a native implementation is available, the main export is the native implementation', opts, function test( t ) {
+ var ctril = proxyquire( './../lib', {
+ '@stdlib/utils/try-require': tryRequire
+ });
+
+ t.strictEqual( ctril, mock, 'returns native implementation' );
+ t.end();
+
+ function tryRequire() {
+ return mock;
+ }
+
+ function mock() {
+ // Mock...
+ }
+});
+
+tape( 'if a native implementation is not available, the main export is a JavaScript implementation', opts, function test( t ) {
+ var ctril;
+ var main;
+
+ main = require( './../lib/main.js' );
+
+ ctril = proxyquire( './../lib', {
+ '@stdlib/utils/try-require': tryRequire
+ });
+
+ t.strictEqual( ctril, main, 'returns JavaScript implementation' );
+ t.end();
+
+ function tryRequire() {
+ return new Error( 'Cannot find module' );
+ }
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ndarray.js
new file mode 100644
index 000000000000..4acd722b12de
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ndarray.js
@@ -0,0 +1,297 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var isSameComplex64Array = require( '@stdlib/assert/is-same-complex64array' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var ctril = require( './../lib/ndarray.js' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof ctril, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 11', function test( t ) {
+ t.strictEqual( ctril.length, 11, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k=0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 0, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( out, B, 'returns expected value' );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k>0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 1, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k<0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, -1, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 0.0, 0.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k=0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 0, A, 1, 3, 0, B, 1, 3, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k<0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, -1, A, 1, 3, 0, B, 1, 3, 0 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 0.0, 0.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k>0)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 1, A, 1, 3, 0, B, 1, 3, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 6.0, 6.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (row-major)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 2, 3, 0, A, 3, 1, 0, B, 3, 1, 0 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (column-major)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 2.0, 2.0, 4.0, 4.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 3, 2, 0, A, 1, 3, 0, B, 1, 3, 0 );
+ expected = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 0.0, 0.0, 4.0, 4.0, 6.0, 6.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports an `A` offset', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 0.0, 0.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 2, 2, 0, A, 2, 1, 1, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 2.0, 2.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports a `B` offset', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 6 );
+
+ out = ctril( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 2 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 9.0, 9.0, 0.0, 0.0, 9.0, 9.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports negative strides', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 2.0, 2.0, 1.0, 1.0, 4.0, 4.0, 3.0, 3.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 2, 2, 0, A, 2, -1, 1, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function leaves elements outside of the copied region unchanged', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( [ -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0 ] );
+
+ out = ctril( 3, 3, 0, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 4.0, 4.0, 5.0, 5.0, -1.0, -1.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is sufficiently negative, the function copies nothing', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+
+ out = ctril( 2, 2, -2, A, 2, 1, 0, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is sufficiently positive, the function copies the entire matrix', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 2, 2, 2, A, 2, 1, 0, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function leaves `B` unchanged when `M` or `N` is equal to zero', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ expected = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 0, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 2, 0, 0, A, 2, 1, 0, B, 2, 1, 0 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports complex access patterns (non-unit strides and offsets on both `A` and `B`)', function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 9.0, 9.0, 1.0, 1.0, 9.0, 9.0, 2.0, 2.0, 9.0, 9.0, 3.0, 3.0, 9.0, 9.0, 4.0, 4.0 ] );
+ B = new Complex64Array( 8 );
+
+ out = ctril( 2, 2, 0, A, 4, 2, 1, B, 4, 2, 1 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 3.0, 3.0, 0.0, 0.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ndarray.native.js
new file mode 100644
index 000000000000..83039b64d628
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ctril/test/test.ndarray.native.js
@@ -0,0 +1,311 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var tape = require( 'tape' );
+var isSameComplex64Array = require( '@stdlib/assert/is-same-complex64array' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var ctril = tryRequire( resolve( __dirname, './../lib/ndarray.native.js' ) );
+var opts = {
+ 'skip': ( ctril instanceof Error )
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof ctril, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 11', opts, function test( t ) {
+ t.strictEqual( ctril.length, 11, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k=0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 0, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( out, B, 'returns expected value' );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k>0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 1, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (row-major, k<0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, -1, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 0.0, 0.0, 0.0, 0.0, 7.0, 7.0, 8.0, 8.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k=0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 0, A, 1, 3, 0, B, 1, 3, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k<0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, -1, A, 1, 3, 0, B, 1, 3, 0 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 4.0, 4.0, 7.0, 7.0, 0.0, 0.0, 0.0, 0.0, 8.0, 8.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function copies the lower triangular part of `A` to `B` (column-major, k>0)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 3.0, 3.0, 6.0, 6.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 9 );
+
+ out = ctril( 3, 3, 1, A, 1, 3, 0, B, 1, 3, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 4.0, 4.0, 7.0, 7.0, 2.0, 2.0, 5.0, 5.0, 8.0, 8.0, 0.0, 0.0, 6.0, 6.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (row-major)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ // 2x3 row-major
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 2, 3, 0, A, 3, 1, 0, B, 3, 1, 0 );
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0, 0.0, 0.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports non-square matrices (column-major)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ // 3x2 column-major
+ A = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 2.0, 2.0, 4.0, 4.0, 6.0, 6.0 ] );
+ B = new Complex64Array( 6 );
+ out = ctril( 3, 2, 0, A, 1, 3, 0, B, 1, 3, 0 );
+ expected = new Complex64Array( [ 1.0, 1.0, 3.0, 3.0, 5.0, 5.0, 0.0, 0.0, 4.0, 4.0, 6.0, 6.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports an `A` offset', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ // 2x2 with A offset=1 (start from 2nd element)
+ A = new Complex64Array( [ 0.0, 0.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 2, 2, 0, A, 2, 1, 1, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 2.0, 2.0, 0.0, 0.0, 4.0, 4.0, 5.0, 5.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports a `B` offset', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ // 2x2 with B offset=2 (start writing from 3rd element)
+ A = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ B = new Complex64Array( 6 );
+
+ out = ctril( 2, 2, 0, A, 2, 1, 0, B, 2, 1, 2 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 0.0, 0.0, 9.0, 9.0, 0.0, 0.0, 9.0, 9.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports negative strides', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ // 2x2 row-major with negative stride for columns (reversed columns)
+ A = new Complex64Array( [ 2.0, 2.0, 1.0, 1.0, 4.0, 4.0, 3.0, 3.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 2, 2, 0, A, 2, -1, 1, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 0.0, 0.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function leaves elements outside of the copied region unchanged', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ B = new Complex64Array( [ -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0 ] );
+
+ out = ctril( 3, 3, 0, A, 3, 1, 0, B, 3, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 4.0, 4.0, 5.0, 5.0, -1.0, -1.0, 7.0, 7.0, 8.0, 8.0, 9.0, 9.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is greater than or equal to `N`, the function copies nothing', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+
+ out = ctril( 2, 2, 2, A, 2, 1, 0, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'when `k` is sufficiently negative, the function copies the entire matrix', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ B = new Complex64Array( 4 );
+
+ out = ctril( 2, 2, 2, A, 2, 1, 0, B, 2, 1, 0 );
+
+ expected = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function leaves `B` unchanged when `M` or `N` is equal to zero', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0 ] );
+ expected = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 0, 2, 0, A, 2, 1, 0, B, 2, 1, 0 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ B = new Complex64Array( [ 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 ] );
+ out = ctril( 2, 0, 0, A, 2, 1, 0, B, 2, 1, 0 );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports complex access patterns (non-unit strides and offsets on both `A` and `B`)', opts, function test( t ) {
+ var expected;
+ var out;
+ var A;
+ var B;
+
+ A = new Complex64Array( [ 9.0, 9.0, 1.0, 1.0, 9.0, 9.0, 2.0, 2.0, 9.0, 9.0, 3.0, 3.0, 9.0, 9.0, 4.0, 4.0 ] );
+ B = new Complex64Array( 8 );
+
+ out = ctril( 2, 2, 0, A, 4, 2, 1, B, 4, 2, 1 );
+
+ expected = new Complex64Array( [ 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 3.0, 3.0, 0.0, 0.0, 4.0, 4.0 ] );
+ t.strictEqual( isSameComplex64Array( out, expected ), true, 'returns expected value' );
+ t.end();
+});