From 3160032b67f26069b3a868675321aef39517aea8 Mon Sep 17 00:00:00 2001
From: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
Date: Tue, 8 Jul 2025 11:29:32 +0000
Subject: [PATCH 1/6] feat: add blas/ext/base/dlast-index-of
---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
- task: lint_filenames
status: passed
- task: lint_editorconfig
status: passed
- task: lint_markdown
status: passed
- task: lint_package_json
status: passed
- task: lint_repl_help
status: passed
- task: lint_javascript_src
status: passed
- task: lint_javascript_cli
status: na
- task: lint_javascript_examples
status: passed
- task: lint_javascript_tests
status: passed
- task: lint_javascript_benchmarks
status: passed
- task: lint_python
status: na
- task: lint_r
status: na
- task: lint_c_src
status: missing_dependencies
- task: lint_c_examples
status: missing_dependencies
- task: lint_c_benchmarks
status: missing_dependencies
- task: lint_c_tests_fixtures
status: na
- task: lint_shell
status: na
- task: lint_typescript_declarations
status: passed
- task: lint_typescript_tests
status: passed
- task: lint_license_headers
status: passed
---
---
.../blas/ext/base/dlast-index-of/README.md | 315 ++++++++++++++++++
.../dlast-index-of/benchmark/benchmark.js | 96 ++++++
.../benchmark/benchmark.native.js | 105 ++++++
.../benchmark/benchmark.ndarray.js | 96 ++++++
.../benchmark/benchmark.ndarray.native.js | 105 ++++++
.../base/dlast-index-of/benchmark/c/Makefile | 146 ++++++++
.../benchmark/c/benchmark.length.c | 193 +++++++++++
.../blas/ext/base/dlast-index-of/binding.gyp | 170 ++++++++++
.../ext/base/dlast-index-of/docs/repl.txt | 77 +++++
.../base/dlast-index-of/docs/types/index.d.ts | 96 ++++++
.../base/dlast-index-of/docs/types/test.ts | 148 ++++++++
.../base/dlast-index-of/examples/c/Makefile | 146 ++++++++
.../base/dlast-index-of/examples/c/example.c | 37 ++
.../ext/base/dlast-index-of/examples/index.js | 30 ++
.../blas/ext/base/dlast-index-of/include.gypi | 53 +++
.../include/stdlib/blas/ext/base/dindex_of.h | 45 +++
.../base/dlast-index-of/lib/dlast_index_of.js | 53 +++
.../lib/dlast_index_of.native.js | 52 +++
.../blas/ext/base/dlast-index-of/lib/index.js | 68 ++++
.../blas/ext/base/dlast-index-of/lib/main.js | 35 ++
.../ext/base/dlast-index-of/lib/native.js | 35 ++
.../ext/base/dlast-index-of/lib/ndarray.js | 70 ++++
.../base/dlast-index-of/lib/ndarray.native.js | 53 +++
.../ext/base/dlast-index-of/manifest.json | 83 +++++
.../blas/ext/base/dlast-index-of/package.json | 70 ++++
.../blas/ext/base/dlast-index-of/src/Makefile | 70 ++++
.../blas/ext/base/dlast-index-of/src/addon.c | 64 ++++
.../blas/ext/base/dlast-index-of/src/main.c | 67 ++++
.../test/test.dindex_of.native.js | 99 ++++++
.../test/test.dlast_index_of.js | 90 +++++
.../blas/ext/base/dlast-index-of/test/test.js | 82 +++++
.../base/dlast-index-of/test/test.ndarray.js | 90 +++++
.../test/test.ndarray.native.js | 99 ++++++
33 files changed, 3038 insertions(+)
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.native.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.native.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/Makefile
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/benchmark.length.c
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/binding.gyp
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/test.ts
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/Makefile
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/example.c
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include.gypi
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include/stdlib/blas/ext/base/dindex_of.h
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/dlast_index_of.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/dlast_index_of.native.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/index.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/main.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/native.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/ndarray.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/ndarray.native.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/manifest.json
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/package.json
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/Makefile
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/addon.c
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dindex_of.native.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dlast_index_of.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
create mode 100644 lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md
new file mode 100644
index 000000000000..99f164497ed5
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md
@@ -0,0 +1,315 @@
+
+
+# dlastIndexOf
+
+> Return the last index of a specified search element in a double-precision floating-point strided array.
+
+
+
+
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var dlastIndexOf = require( '@stdlib/blas/ext/base/dlast-index-of' );
+```
+
+#### dlastIndexOf( N, searchElement, x, strideX )
+
+Returns the last index of a specified search element in a double-precision floating-point strided array.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, 3.0, -1.0 ] );
+
+var idx = dlastIndexOf( x.length, 3.0, x, 1 );
+// returns 6
+```
+
+The function has the following parameters:
+
+- **N**: number of indexed elements.
+- **searchElement**: search element.
+- **x**: input [`Float64Array`][@stdlib/array/float64].
+- **strideX**: stride length.
+
+If the function is unable to find a search element, the function returns `-1`.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, 3.0 ] );
+
+var idx = dlastIndexOf( x.length, 8.0, x, 1 );
+// returns -1
+```
+
+The `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to search every other element:
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ -2.0, -1.0, 3.0, -5.0, 3.0, 4.0, -1.0, 0.0 ] );
+
+var idx = dlastIndexOf( 4, 3.0, x, 2 );
+// returns 2
+```
+
+Note that indexing is relative to the last index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+
+// Initial array...
+var x0 = new Float64Array( [ -2.0, 3.0, -6.0, -4.0, 5.0, 3.0 ] );
+
+// Create an offset view...
+var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+// Find index...
+var idx = dlastIndexOf( 5, 3.0, x1, 2 );
+// returns 2
+```
+
+#### dlastIndexOf.ndarray( N, searchElement, x, strideX, offsetX )
+
+Returns the last index of a specified search element in a double-precision floating-point strided array using alternative indexing semantics.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ -2.0, 1.0, 3.0, -5.0, 4.0, 3.0, -1.0, 0.0 ] );
+
+var idx = dlastIndexOf.ndarray( x.length, 3.0, x, 1, 0 );
+// returns 5
+```
+
+The function has the following additional parameters:
+
+- **offsetX**: starting index.
+
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to access only the last three elements of the strided array
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+
+var x = new Float64Array( [ -2.0, 1.0, 0.0, -5.0, 4.0, 3.0, 3.0, -1.0 ] );
+
+var idx = dlastIndexOf.ndarray( 3, 3.0, x, 1, x.length-3 );
+// returns 1
+```
+
+
+
+
+
+
+
+
+
+## Notes
+
+- When searching for a search element, the function checks for equality using the strict equality operator `===`. As a consequence, `NaN` values are considered distinct, and `-0` and `+0` are considered the same.
+
+
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var dlastIndexOf = require( '@stdlib/blas/ext/base/dlast-index-of' );
+
+var x = discreteUniform( 10, -100, 100, {
+ 'dtype': 'float64'
+});
+console.log( x );
+
+var idx = dlastIndexOf( x.length, 80.0, x, 1 );
+console.log( idx );
+```
+
+
+
+
+
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/blas/ext/base/dlast_index_of.h"
+```
+
+#### stdlib_strided_dlast_index_of( N, searchElement, \*X, strideX )
+
+Returns the last index of a specified search element in a double-precision floating-point strided array.
+
+```c
+double x[] = { 1.0, 2.0, 3.0, 2.0 };
+
+int idx = stdlib_strided_dlast_index_of( 4, 2.0, x, 1 );
+// returns 3
+```
+
+The function accepts the following arguments:
+
+- **N**: `[in] CBLAS_INT` number of indexed elements.
+- **searchElement**: `[in] double` search element.
+- **X**: `[in] double*` input array.
+- **strideX**: `[in] CBLAS_INT` stride length.
+
+```c
+CBLAS_INT N stdlib_strided_dlast_index_of( const CBLAS_INT N, const double searchElement, const double *X, const CBLAS_INT strideX );
+```
+
+#### stdlib_strided_dlast_index_of_ndarray( N, searchElement, \*X, strideX, offsetX )
+
+Returns the last index of a specified search element in a double-precision floating-point strided array using alternative indexing semantics.
+
+```c
+double x[] = { 1.0, 2.0, 3.0, 2.0 };
+
+int idx = stdlib_strided_dlast_index_of( 4, 2.0, x, 1, 0 );
+// returns 3
+```
+
+The function accepts the following arguments:
+
+- **N**: `[in] CBLAS_INT` number of indexed elements.
+- **searchElement**: `[in] double` search element.
+- **X**: `[in] double*` input array.
+- **strideX**: `[in] CBLAS_INT` stride length.
+- **offsetX**: `[in] CBLAS_INT` starting index.
+
+```c
+CBLAS_INT stdlib_strided_dlast_index_of_ndarray( const CBLAS_INT N, const double searchElement, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/blas/ext/base/dlast_index_of.h"
+#include
+
+int main( void ) {
+ // Create a strided array:
+ double x[] = { 1.0, -2.0, 3.0, -4.0, 5.0, 3.0, 7.0, -8.0 };
+
+ // Specify the number of indexed elements:
+ const int N = 8;
+
+ // Specify a stride:
+ const int strideX = 1;
+
+ // Perform a search:
+ int idx = stdlib_strided_dlast_index_of( N, 3.0, x, strideX );
+
+ // Print the result:
+ printf( "index value: %d\n", idx );
+}
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[@stdlib/array/float64]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/float64
+
+[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/dlast-index-of/benchmark/benchmark.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.js
new file mode 100644
index 000000000000..8481d3963a99
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.js
@@ -0,0 +1,96 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 pow = require( '@stdlib/math/base/special/pow' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var oneTo = require( '@stdlib/array/one-to' );
+var pkg = require( './../package.json' ).name;
+var dlastIndexOf = require( './../lib/dlast_index_of.js' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var x = oneTo( len, 'float64' );
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var out;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = dlastIndexOf( x.length, len+1, x, 1 );
+ if ( out !== out ) {
+ b.fail( 'should return an integer' );
+ }
+ }
+ b.toc();
+ if ( !isInteger( out ) ) {
+ b.fail( 'should return an integer' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+
+ f = createBenchmark( len );
+ bench( pkg+':len='+len, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..66d4a483a621
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.native.js
@@ -0,0 +1,105 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 pow = require( '@stdlib/math/base/special/pow' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var oneTo = require( '@stdlib/array/one-to' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var dlastIndexOf = tryRequire( resolve( __dirname, './../lib/dlast_index_of.native.js' ) );
+var opts = {
+ 'skip': ( dlastIndexOf instanceof Error )
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var x = oneTo( len, 'float64' );
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var out;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = dlastIndexOf( x.length, len+1, x, 1 );
+ if ( out !== out ) {
+ b.fail( 'should return an integer' );
+ }
+ }
+ b.toc();
+ if ( !isInteger( out ) ) {
+ b.fail( 'should return an integer' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+
+ f = createBenchmark( len );
+ bench( pkg+'::native:len='+len, opts, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.js
new file mode 100644
index 000000000000..b96b82148e96
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.js
@@ -0,0 +1,96 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 pow = require( '@stdlib/math/base/special/pow' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var oneTo = require( '@stdlib/array/one-to' );
+var pkg = require( './../package.json' ).name;
+var dlastIndexOf = require( './../lib/ndarray.js' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var x = oneTo( len, 'float64' );
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var out;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = dlastIndexOf( x.length, len+1, x, 1, 0 );
+ if ( out !== out ) {
+ b.fail( 'should return an integer' );
+ }
+ }
+ b.toc();
+ if ( !isInteger( out ) ) {
+ b.fail( 'should return an integer' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+
+ f = createBenchmark( len );
+ bench( pkg+':ndarray:len='+len, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.native.js
new file mode 100644
index 000000000000..41faaf5d27e0
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/benchmark.ndarray.native.js
@@ -0,0 +1,105 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 pow = require( '@stdlib/math/base/special/pow' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var oneTo = require( '@stdlib/array/one-to' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var dlastIndexOf = tryRequire( resolve( __dirname, './../lib/ndarray.native.js' ) );
+var opts = {
+ 'skip': ( dlastIndexOf instanceof Error )
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var x = oneTo( len, 'float64' );
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var out;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = dlastIndexOf( x.length, len+1, x, 1, 0 );
+ if ( out !== out ) {
+ b.fail( 'should return an integer' );
+ }
+ }
+ b.toc();
+ if ( !isInteger( out ) ) {
+ b.fail( 'should return an integer' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+
+ f = createBenchmark( len );
+ bench( pkg+'::native:ndarray:len='+len, opts, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/Makefile
new file mode 100644
index 000000000000..cce2c865d7ad
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 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/dlast-index-of/benchmark/c/benchmark.length.c b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/benchmark.length.c
new file mode 100644
index 000000000000..3061071306cb
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/benchmark/c/benchmark.length.c
@@ -0,0 +1,193 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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/dlast_index_of.h"
+#include
+#include
+#include
+#include
+#include
+
+#define NAME "dlastindexof"
+#define ITERATIONS 10000000
+#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 [0,1).
+*
+* @return random number
+*/
+static double rand_double( void ) {
+ int r = rand();
+ return (double)r / ( (double)RAND_MAX + 1.0 );
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations number of iterations
+* @param len array length
+* @return elapsed time in seconds
+*/
+static double benchmark1( int iterations, int len ) {
+ double elapsed;
+ double x[ len ];
+ double t;
+ int idx;
+ int i;
+
+ for ( i = 0; i < len; i++ ) {
+ x[ i ] = ( rand_double()*20000.0 ) - 10000.0;
+ }
+ idx = -1;
+ t = tic();
+ for ( i = 0; i < iterations; i++ ) {
+ // cppcheck-suppress uninitvar
+ idx = stdlib_strided_dlast_index_of( len, 20000.0, x, 1 );
+ if ( idx < -2 ) {
+ printf( "unexpected result\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( idx < -2 ) {
+ printf( "unexpected result\n" );
+ }
+ return elapsed;
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations number of iterations
+* @param len array length
+* @return elapsed time in seconds
+*/
+static double benchmark2( int iterations, int len ) {
+ double elapsed;
+ double x[ len ];
+ double t;
+ int idx;
+ int i;
+
+ for ( i = 0; i < len; i++ ) {
+ x[ i ] = ( rand_double()*20000.0 ) - 10000.0;
+ }
+ idx = -1;
+ t = tic();
+ for ( i = 0; i < iterations; i++ ) {
+ // cppcheck-suppress uninitvar
+ idx = stdlib_strided_dlast_index_of_ndarray( len, 20000.0, x, 1, 0 );
+ if ( idx < -2 ) {
+ printf( "unexpected result\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( idx < -2 ) {
+ printf( "unexpected result\n" );
+ }
+ return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+ double elapsed;
+ int count;
+ int iter;
+ int len;
+ 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 );
+ iter = ITERATIONS / pow( 10, i-1 );
+ for ( j = 0; j < REPEATS; j++ ) {
+ count += 1;
+ printf( "# c::%s:len=%d\n", NAME, len );
+ elapsed = benchmark1( iter, len );
+ print_results( iter, elapsed );
+ printf( "ok %d benchmark finished\n", count );
+ }
+ for ( j = 0; j < REPEATS; j++ ) {
+ count += 1;
+ printf( "# c::%s:ndarray:len=%d\n", NAME, len );
+ elapsed = benchmark2( iter, len );
+ 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/dlast-index-of/binding.gyp b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/binding.gyp
new file mode 100644
index 000000000000..68a1ca11d160
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/binding.gyp
@@ -0,0 +1,170 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 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/dlast-index-of/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt
new file mode 100644
index 000000000000..22847bccc0f4
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt
@@ -0,0 +1,77 @@
+
+{{alias}}( N, searchElement, x, strideX )
+ Returns the last index of a specified search element in a double-precision
+ floating-point strided array.
+
+ The `N` and stride parameters determine which elements in the strided array
+ are accessed at runtime.
+
+ Indexing is relative to the first index. To introduce an offset, use a typed
+ array view.
+
+ if `N <= 0`, the function returns `-1`.
+
+ Parameters
+ ----------
+ N: integer
+ Number of indexed elements.
+
+ searchElement: number
+ Search element.
+
+ x: Float64Array
+ Input array.
+
+ strideX: integer
+ Stride length.
+
+ Returns
+ -------
+ idx: integer
+ Index.
+
+ Examples
+ --------
+ > var x = new {{alias:@stdlib/array/float64}}( [ -2.0, 1.0, 3.0, -5.0, 4.0, -1.0, 3.0 ] );
+ > var idx = {{alias}}( x.length, 3.0, x, 1 )
+ 6
+
+
+{{alias}}( N, searchElement, x, strideX, offsetX )
+ Returns the last index of a specified search element in a double-precision
+ floating-point strided array using alternative indexing semantics.
+
+ While typed array views mandate a view offset based on the underlying
+ buffer, the offset parameter supports indexing semantics based on a
+ starting index.
+
+ Parameters
+ ----------
+ N: integer
+ Number of indexed elements.
+
+ searchElement: number
+ Search element.
+
+ x: Float64Array
+ Input array.
+
+ strideX: integer
+ Stride length.
+
+ offsetX: integer
+ Starting index.
+
+ Returns
+ -------
+ idx: integer
+ Index.
+
+ Examples
+ --------
+ > var x = new {{alias:@stdlib/array/float64}}( [ -2.0, 1.0, 3.0, -5.0, 4.0, -1.0, 3.0 ] );
+ > var idx = {{alias}}.ndarray( x.length, 3.0, x, 1, 0 )
+ 6
+
+ See Also
+ --------
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts
new file mode 100644
index 000000000000..8e2577cbeff6
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts
@@ -0,0 +1,96 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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
+
+/**
+* Interface describing `dlastIndexOf`
+*
+*/
+interface Routine {
+ /**
+ * Returns the last index of a specified search element in a double-precision floating-point strided array.
+ *
+ * @param N - number of indexed elements
+ * @param searchElement - search element
+ * @param x - input array
+ * @param strideX - stride length
+ * @returns index
+ *
+ * @example
+ * var Float64Array = require( '@stdlib/array/float64' );
+ *
+ * var x = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ *
+ * var idx = dlastIndexOf( x.length, 2.0, x, 1 );
+ * // returns 1
+ */
+ ( N: number, searchElement: number, x: Float64Array, strideX: number ): number;
+
+ /**
+ * Returns the last index of a specified search element in a double-precision floating-point strided array using alternative indexing semantics.
+ *
+ * @param N - number of indexed elements
+ * @param searchElement - search element
+ * @param x - input array
+ * @param strideX - stride length
+ * @param offsetX - starting index
+ * @returns index
+ *
+ * @example
+ * var Float64Array = require( '@stdlib/array/float64' );
+ *
+ * var x = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+ *
+ * var idx = dlastIndexOf.ndarray( x.length, 2.0, x, 1, 0 );
+ * // returns 1
+ */
+ ndarray( N: number, searchElement: number, x: Float64Array, strideX: number, offsetX: number ): number;
+}
+
+/**
+* Returns the last index of a specified search element in a double-precision floating-point strided array.
+*
+* @param N - number of indexed elements
+* @param searchElement - search element
+* @param x - input array
+* @param strideX - stride length
+* @returns index
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+*
+* var x = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+*
+* var idx = dlastIndexOf( x.length, 2.0, x, 1 );
+* // returns 1
+*
+* @example
+* var Float64Array = require( '@stdlib/array/float64' );
+*
+* var x = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+*
+* var idx = dlastIndexOf.ndarray( x.length, 2.0, x, 1, 0 );
+* // returns 1
+*/
+declare var dlastIndexOf: Routine;
+
+
+// EXPORTS //
+
+export = dlastIndexOf;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/test.ts b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/test.ts
new file mode 100644
index 000000000000..731cd3b4adc7
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/test.ts
@@ -0,0 +1,148 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 dlastIndexOf = require( './index' );
+
+
+// TESTS //
+
+// The function returns a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf( x.length, 2.0, x, 1 ); // $ExpectType number
+}
+
+// The compiler throws an error if the function is provided a first argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf( '1', 2.0, x, 1 ); // $ExpectError
+ dlastIndexOf( true, 2.0, x, 1 ); // $ExpectError
+ dlastIndexOf( false, 2.0, x, 1 ); // $ExpectError
+ dlastIndexOf( null, 2.0, x, 1 ); // $ExpectError
+ dlastIndexOf( {}, 2.0, x, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf( x.length, '1', x, 1 ); // $ExpectError
+ dlastIndexOf( x.length, true, x, 1 ); // $ExpectError
+ dlastIndexOf( x.length, false, x, 1 ); // $ExpectError
+ dlastIndexOf( x.length, null, x, 1 ); // $ExpectError
+ dlastIndexOf( x.length, {}, x, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a third argument which is not a Float64Array...
+{
+ dlastIndexOf( x.length, 1.0, '1', 1 ); // $ExpectError
+ dlastIndexOf( x.length, 1.0, true, 1 ); // $ExpectError
+ dlastIndexOf( x.length, 1.0, false, 1 ); // $ExpectError
+ dlastIndexOf( x.length, 1.0, null, 1 ); // $ExpectError
+ dlastIndexOf( x.length, 1.0, {}, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a fourth argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf( x.length, 2.0, x, '1' ); // $ExpectError
+ dlastIndexOf( x.length, 2.0, x, true ); // $ExpectError
+ dlastIndexOf( x.length, 2.0, x, false ); // $ExpectError
+ dlastIndexOf( x.length, 2.0, x, null ); // $ExpectError
+ dlastIndexOf( x.length, 2.0, x, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ dlastIndexOf(); // $ExpectError
+ dlastIndexOf( 3, 2.0 ); // $ExpectError
+ dlastIndexOf( 3, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ) ); // $ExpectError
+ dlastIndexOf( 3, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1, 0 ); // $ExpectError
+}
+
+// Attached to main export is an `ndarray` method which returns a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf.ndarray( x.length, 2.0, x, 1, 0 ); // $ExpectType number
+}
+
+// The compiler throws an error if the `ndarray` method is provided a first argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf.ndarray( '1', 2.0, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( true, 2.0, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( false, 2.0, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( null, 2.0, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( {}, 2.0, x, 1, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a second argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf.ndarray( x.length, '1', x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, true, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, false, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, null, x, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, {}, x, 1, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a third argument which is not a Float64Array...
+{
+ dlastIndexOf.ndarray( x.length, 1.0, '1', 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 1.0, true, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 1.0, false, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 1.0, null, 1, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 1.0, {}, 1, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a fourth argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf.ndarray( x.length, 2.0, x, '1', 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, true, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, false, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, null, 1 ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, {}, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a fifth argument which is not a number...
+{
+ var x = new Float64Array( [ 1.0, 2.0, 3.0 ] );
+
+ dlastIndexOf.ndarray( x.length, 2.0, x, 1, '1' ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, 1, true ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, 1, false ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, 1, null ); // $ExpectError
+ dlastIndexOf.ndarray( x.length, 2.0, x, 1, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided an unsupported number of arguments...
+{
+ dlastIndexOf.ndarray(); // $ExpectError
+ dlastIndexOf.ndarray( 3, 2.0 ); // $ExpectError
+ dlastIndexOf.ndarray( 3, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ) ); // $ExpectError
+ dlastIndexOf.ndarray( 3, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1 ); // $ExpectError
+ dlastIndexOf.ndarray( 3, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1, 0, 0 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/Makefile
new file mode 100644
index 000000000000..25ced822f96a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 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/dlast-index-of/examples/c/example.c b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/example.c
new file mode 100644
index 000000000000..cf9f08d2ca29
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/c/example.c
@@ -0,0 +1,37 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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/dlast_index_of.h"
+#include
+
+int main( void ) {
+ // Create a strided array:
+ const double x[] = { 1.0, -2.0, 3.0, -4.0, 5.0, -6.0, 7.0, -8.0 };
+
+ // Specify the number of indexed elements:
+ const int N = 8;
+
+ // Specify a stride:
+ const int strideX = 1;
+
+ // Perform a search:
+ int idx = stdlib_strided_dlast_index_of( N, 3.0, x, strideX );
+
+ // Print the result:
+ printf( "index value: %d\n", idx );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js
new file mode 100644
index 000000000000..f20a32690e92
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js
@@ -0,0 +1,30 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var dlastIndexOf = require( './../lib' );
+
+var x = discreteUniform( 10, -100, 100, {
+ 'dtype': 'float64'
+});
+console.log( x );
+
+var idx = dlastIndexOf.ndarray( 5, 2.0, x, 1, 9 );
+console.log( idx );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include.gypi b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include.gypi
new file mode 100644
index 000000000000..ecfaf82a3279
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 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': [
+ '=0.10.0",
+ "npm": ">2.7.0"
+ },
+ "os": [
+ "aix",
+ "darwin",
+ "freebsd",
+ "linux",
+ "macos",
+ "openbsd",
+ "sunos",
+ "win32",
+ "windows"
+ ],
+ "keywords": [
+ "stdlib",
+ "blas",
+ "find",
+ "index",
+ "search",
+ "element",
+ "array",
+ "ndarray",
+ "strided",
+ "double",
+ "float",
+ "float64",
+ "float64array"
+ ]
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/Makefile b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/Makefile
new file mode 100644
index 000000000000..7733b6180cb4
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/Makefile
@@ -0,0 +1,70 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 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/dlast-index-of/src/addon.c b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/addon.c
new file mode 100644
index 000000000000..40ce13d15863
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/addon.c
@@ -0,0 +1,64 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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/dlast_index_of.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_double.h"
+#include "stdlib/napi/argv_strided_float64array.h"
+#include "stdlib/napi/create_int32.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 ) {
+ STDLIB_NAPI_ARGV( env, info, argv, argc, 4 );
+ STDLIB_NAPI_ARGV_INT64( env, N, argv, 0 );
+ STDLIB_NAPI_ARGV_DOUBLE( env, searchElement, argv, 1 );
+ STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 3 );
+ STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, N, strideX, argv, 2 );
+ STDLIB_NAPI_CREATE_INT32( env, API_SUFFIX(stdlib_strided_dlast_index_of)( N, searchElement, X, strideX ), idx ); // TODO: Need to revisit in order to support int64_t for CBLAS_INT
+ return idx;
+}
+
+/**
+* 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, 5 );
+ STDLIB_NAPI_ARGV_INT64( env, N, argv, 0 );
+ STDLIB_NAPI_ARGV_DOUBLE( env, searchElement, argv, 1 );
+ STDLIB_NAPI_ARGV_INT64( env, strideX, argv, 3 );
+ STDLIB_NAPI_ARGV_INT64( env, offsetX, argv, 4 );
+ STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, N, strideX, argv, 2 );
+ STDLIB_NAPI_CREATE_INT32( env, API_SUFFIX(stdlib_strided_dlast_index_of_ndarray)( N, searchElement, X, strideX, offsetX ), idx ); // TODO: Need to revisit in order to support int64_t for CBLAS_INT
+ return idx;
+}
+
+STDLIB_NAPI_MODULE_EXPORT_FCN_WITH_METHOD( addon, "ndarray", addon_method );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
new file mode 100644
index 000000000000..3436589583ca
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
@@ -0,0 +1,67 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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/dlast_index_of.h"
+#include "stdlib/blas/ext/base/dindex_of.h"
+#include "stdlib/strided/base/stride2offset.h"
+#include "stdlib/blas/base/shared.h"
+
+/**
+* Returns the last index of a specified search element in a double-precision floating-point strided array.
+*
+* @param N number of indexed elements
+* @param searchElement search element
+* @param X input array
+* @param strideX stride length
+* @return index
+*/
+CBLAS_INT API_SUFFIX(stdlib_strided_dlast_index_of)( const CBLAS_INT N, const double searchElement, const double *X, const CBLAS_INT strideX ) {
+ CBLAS_INT ox = stdlib_strided_stride2offset( N, strideX );
+ return API_SUFFIX(stdlib_strided_dlast_index_of_ndarray)( N, searchElement, X, strideX, ox );
+}
+
+/**
+* Returns the last index of a specified search element in a double-precision floating-point strided array using alternative indexing semantics.
+*
+* @param N number of indexed elements
+* @param searchElement search element
+* @param X input array
+* @param strideX stride length
+* @param offsetX starting index
+* @return index
+*/
+CBLAS_INT API_SUFFIX(stdlib_strided_dlast_index_of_ndarray)( const CBLAS_INT N, const double searchElement, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX ) {
+ CBLAS_INT idx;
+ CBLAS_INT sv;
+ CBLAS_INT ov;
+
+ if ( N <= 0 ) {
+ return -1;
+ }
+ ov = offsetX + ( ( N - 1 ) * strideX );
+ sv = -strideX;
+
+ // Find index of the search element in the reversed view:
+ idx = API_SUFFIX(stdlib_strided_dindex_of_ndarray)( N, searchElement, x, sv, ov ); // eslint-disable-line max-len
+ if ( idx < 0 ) {
+ return idx;
+ }
+ // Convert the index from reversed view to the forward view:
+ idx = N - 1 - idx;
+ return idx;
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dindex_of.native.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dindex_of.native.js
new file mode 100644
index 000000000000..bc4dda495805
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dindex_of.native.js
@@ -0,0 +1,99 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 Float64Array = require( '@stdlib/array/float64' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var dlastIndexOf = tryRequire( resolve( __dirname, './../lib/dlast_index_of.native.js' ) );
+var opts = {
+ 'skip': ( dlastIndexOf instanceof Error )
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof dlastIndexOf, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function returns the last index of an element which equals a provided search element', opts, function test( t ) {
+ var actual;
+ var x;
+
+ x = new Float64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0 ] );
+
+ // Nonnegative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, 1 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 2.0, x, 1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 3.0, x, 1 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ // Negative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, -1 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 2.0, x, -1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 3.0, x, -1 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, -1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided `N` parameter is less than or equal to zero', opts, function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 0, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ actual = dlastIndexOf( -1, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided a search element equal to `NaN`', opts, function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 1, NaN, new Float64Array( [ NaN ] ), 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dlast_index_of.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dlast_index_of.js
new file mode 100644
index 000000000000..a97f3c8354a3
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.dlast_index_of.js
@@ -0,0 +1,90 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 Float64Array = require( '@stdlib/array/float64' );
+var dlastIndexOf = require( './../lib/dlast_index_of.js' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof dlastIndexOf, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function returns the last index of an element which equals a provided search element', function test( t ) {
+ var actual;
+ var x;
+
+ x = new Float64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0 ] );
+
+ // Nonnegative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, 1 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 2.0, x, 1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 3.0, x, 1 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ // Negative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, -1 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 2.0, x, -1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 3.0, x, -1 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, -1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided `N` parameter is less than or equal to zero', function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 0, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ actual = dlastIndexOf( -1, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided a search element equal to `NaN`', function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 1, NaN, new Float64Array( [ NaN ] ), 1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.js
new file mode 100644
index 000000000000..8b38bd2e4544
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.js
@@ -0,0 +1,82 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 dlastIndexOf = 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 dlastIndexOf, '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 dlastIndexOf.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 dlastIndexOf = proxyquire( './../lib', {
+ '@stdlib/utils/try-require': tryRequire
+ });
+
+ t.strictEqual( dlastIndexOf, mock, 'returns expected value' );
+ 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 dlastIndexOf;
+ var main;
+
+ main = require( './../lib/dlast_index_of.js' );
+
+ dlastIndexOf = proxyquire( './../lib', {
+ '@stdlib/utils/try-require': tryRequire
+ });
+
+ t.strictEqual( dlastIndexOf, main, 'returns expected value' );
+ t.end();
+
+ function tryRequire() {
+ return new Error( 'Cannot find module' );
+ }
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
new file mode 100644
index 000000000000..1af8dd1c486c
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
@@ -0,0 +1,90 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 Float64Array = require( '@stdlib/array/float64' );
+var dlastIndexOf = require( './../lib/ndarray.js' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof dlastIndexOf, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function returns the last index of an element which equals a provided search element', function test( t ) {
+ var actual;
+ var x;
+
+ x = new Float64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0 ] );
+
+ // Nonnegative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, 1, 0 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 2.0, x, 1, 1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 3.0, x, 1, 2 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, 1, 2 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ // Negative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, -1, x.length-1 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( 3, 2.0, x, -2, x.length-1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( 3, 1.0, x, -2, x.length-2 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, -1, x.length-1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided an `N` parameter is less than or equal to zero', function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 0, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1, 0 ); // eslint-disable-line max-len
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ actual = dlastIndexOf( -1, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1, 0 ); // eslint-disable-line max-len
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided a search element equal to `NaN`', function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 1, NaN, new Float64Array( [ NaN ] ), 1, 0 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
new file mode 100644
index 000000000000..7e83b56a0b0f
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
@@ -0,0 +1,99 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 Float64Array = require( '@stdlib/array/float64' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var dlastIndexOf = tryRequire( resolve( __dirname, './../lib/ndarray.native.js' ) );
+var opts = {
+ 'skip': ( dlastIndexOf instanceof Error )
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof dlastIndexOf, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function returns the last index of an element which equals a provided search element', opts, function test( t ) {
+ var actual;
+ var x;
+
+ x = new Float64Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0 ] );
+
+ // Nonnegative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, 1, 0 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 2.0, x, 1, 1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 3.0, x, 1, 2 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, 1, 2 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ // Negative stride...
+ actual = dlastIndexOf( x.length, 1.0, x, -1, x.length-1 );
+ t.strictEqual( actual, 5, 'returns expected value' );
+
+ actual = dlastIndexOf( 3, 2.0, x, -2, x.length-1 );
+ t.strictEqual( actual, 3, 'returns expected value' );
+
+ actual = dlastIndexOf( 3, 1.0, x, -2, x.length-2 );
+ t.strictEqual( actual, 1, 'returns expected value' );
+
+ actual = dlastIndexOf( x.length, 4.0, x, -1, x.length-1 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided `N` parameter is less than or equal to zero', opts, function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 0, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1, 0 ); // eslint-disable-line max-len
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ actual = dlastIndexOf( -1, 2.0, new Float64Array( [ 1.0, 2.0, 3.0 ] ), 1, 0 ); // eslint-disable-line max-len
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided a search element equal to `NaN`', opts, function test( t ) {
+ var actual;
+
+ actual = dlastIndexOf( 1, NaN, new Float64Array( [ NaN ] ), 1, 0 );
+ t.strictEqual( actual, -1, 'returns expected value' );
+
+ t.end();
+});
From b509f7d60e557948299301274f4fcf0bfdab87bb Mon Sep 17 00:00:00 2001
From: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
Date: Tue, 8 Jul 2025 16:37:54 +0500
Subject: [PATCH 2/6] chore: apply suggestions from code review
Signed-off-by: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
---
.../stdlib/blas/ext/base/{dindex_of.h => dlast_index_of.h} | 0
1 file changed, 0 insertions(+), 0 deletions(-)
rename lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include/stdlib/blas/ext/base/{dindex_of.h => dlast_index_of.h} (100%)
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include/stdlib/blas/ext/base/dindex_of.h b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include/stdlib/blas/ext/base/dlast_index_of.h
similarity index 100%
rename from lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include/stdlib/blas/ext/base/dindex_of.h
rename to lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/include/stdlib/blas/ext/base/dlast_index_of.h
From 8c164f847e894a90011ebb8699a5043e157051ea Mon Sep 17 00:00:00 2001
From: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
Date: Tue, 8 Jul 2025 16:41:58 +0500
Subject: [PATCH 3/6] fix: apply suggestions from code review
Signed-off-by: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
---
.../@stdlib/blas/ext/base/dlast-index-of/src/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
index 3436589583ca..c97b1f0f950d 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
@@ -57,7 +57,7 @@ CBLAS_INT API_SUFFIX(stdlib_strided_dlast_index_of_ndarray)( const CBLAS_INT N,
sv = -strideX;
// Find index of the search element in the reversed view:
- idx = API_SUFFIX(stdlib_strided_dindex_of_ndarray)( N, searchElement, x, sv, ov ); // eslint-disable-line max-len
+ idx = API_SUFFIX(stdlib_strided_dindex_of_ndarray)( N, searchElement, X, sv, ov ); // eslint-disable-line max-len
if ( idx < 0 ) {
return idx;
}
From 4677fa920f0f9c733802bb0ab15748b3de41f8dc Mon Sep 17 00:00:00 2001
From: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
Date: Tue, 8 Jul 2025 11:52:03 +0000
Subject: [PATCH 4/6] fix: test values
---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
- task: lint_filenames
status: passed
- task: lint_editorconfig
status: passed
- task: lint_markdown
status: na
- task: lint_package_json
status: na
- task: lint_repl_help
status: na
- task: lint_javascript_src
status: na
- task: lint_javascript_cli
status: na
- task: lint_javascript_examples
status: na
- task: lint_javascript_tests
status: passed
- task: lint_javascript_benchmarks
status: na
- task: lint_python
status: na
- task: lint_r
status: na
- task: lint_c_src
status: na
- task: lint_c_examples
status: na
- task: lint_c_benchmarks
status: na
- task: lint_c_tests_fixtures
status: na
- task: lint_shell
status: na
- task: lint_typescript_declarations
status: na
- task: lint_typescript_tests
status: na
- task: lint_license_headers
status: passed
---
---
.../blas/ext/base/dlast-index-of/test/test.ndarray.js | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
index 1af8dd1c486c..50b695ba2cb9 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
@@ -44,10 +44,10 @@ tape( 'the function returns the last index of an element which equals a provided
t.strictEqual( actual, 1, 'returns expected value' );
actual = dlastIndexOf( x.length, 2.0, x, 1, 1 );
- t.strictEqual( actual, 3, 'returns expected value' );
+ t.strictEqual( actual, 2, 'returns expected value' );
actual = dlastIndexOf( x.length, 3.0, x, 1, 2 );
- t.strictEqual( actual, 5, 'returns expected value' );
+ t.strictEqual( actual, 3, 'returns expected value' );
actual = dlastIndexOf( x.length, 4.0, x, 1, 2 );
t.strictEqual( actual, -1, 'returns expected value' );
@@ -57,10 +57,10 @@ tape( 'the function returns the last index of an element which equals a provided
t.strictEqual( actual, 5, 'returns expected value' );
actual = dlastIndexOf( 3, 2.0, x, -2, x.length-1 );
- t.strictEqual( actual, 3, 'returns expected value' );
+ t.strictEqual( actual, 1, 'returns expected value' );
actual = dlastIndexOf( 3, 1.0, x, -2, x.length-2 );
- t.strictEqual( actual, 1, 'returns expected value' );
+ t.strictEqual( actual, 2, 'returns expected value' );
actual = dlastIndexOf( x.length, 4.0, x, -1, x.length-1 );
t.strictEqual( actual, -1, 'returns expected value' );
From d1539121ba58e86e67e08b01b921c49601781317 Mon Sep 17 00:00:00 2001
From: Muhammad Haris <101793258+headlessNode@users.noreply.github.com>
Date: Tue, 8 Jul 2025 12:00:57 +0000
Subject: [PATCH 5/6] fix: test values
---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
- task: lint_filenames
status: passed
- task: lint_editorconfig
status: passed
- task: lint_markdown
status: na
- task: lint_package_json
status: na
- task: lint_repl_help
status: na
- task: lint_javascript_src
status: na
- task: lint_javascript_cli
status: na
- task: lint_javascript_examples
status: na
- task: lint_javascript_tests
status: passed
- task: lint_javascript_benchmarks
status: na
- task: lint_python
status: na
- task: lint_r
status: na
- task: lint_c_src
status: na
- task: lint_c_examples
status: na
- task: lint_c_benchmarks
status: na
- task: lint_c_tests_fixtures
status: na
- task: lint_shell
status: na
- task: lint_typescript_declarations
status: na
- task: lint_typescript_tests
status: na
- task: lint_license_headers
status: passed
---
---
.../ext/base/dlast-index-of/test/test.ndarray.native.js | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
index 7e83b56a0b0f..262dc460a842 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
@@ -53,10 +53,10 @@ tape( 'the function returns the last index of an element which equals a provided
t.strictEqual( actual, 1, 'returns expected value' );
actual = dlastIndexOf( x.length, 2.0, x, 1, 1 );
- t.strictEqual( actual, 3, 'returns expected value' );
+ t.strictEqual( actual, 2, 'returns expected value' );
actual = dlastIndexOf( x.length, 3.0, x, 1, 2 );
- t.strictEqual( actual, 5, 'returns expected value' );
+ t.strictEqual( actual, 3, 'returns expected value' );
actual = dlastIndexOf( x.length, 4.0, x, 1, 2 );
t.strictEqual( actual, -1, 'returns expected value' );
@@ -66,10 +66,10 @@ tape( 'the function returns the last index of an element which equals a provided
t.strictEqual( actual, 5, 'returns expected value' );
actual = dlastIndexOf( 3, 2.0, x, -2, x.length-1 );
- t.strictEqual( actual, 3, 'returns expected value' );
+ t.strictEqual( actual, 1, 'returns expected value' );
actual = dlastIndexOf( 3, 1.0, x, -2, x.length-2 );
- t.strictEqual( actual, 1, 'returns expected value' );
+ t.strictEqual( actual, 2, 'returns expected value' );
actual = dlastIndexOf( x.length, 4.0, x, -1, x.length-1 );
t.strictEqual( actual, -1, 'returns expected value' );
From 15f18ab2aad7d2988be4ef7949649da6a8bc7111 Mon Sep 17 00:00:00 2001
From: Athan
Date: Wed, 9 Jul 2025 00:40:59 -0700
Subject: [PATCH 6/6] chore: clean-up
---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
- task: lint_filenames
status: passed
- task: lint_editorconfig
status: passed
- task: lint_markdown
status: passed
- task: lint_package_json
status: na
- task: lint_repl_help
status: passed
- task: lint_javascript_src
status: passed
- task: lint_javascript_cli
status: na
- task: lint_javascript_examples
status: passed
- task: lint_javascript_tests
status: passed
- task: lint_javascript_benchmarks
status: na
- task: lint_python
status: na
- task: lint_r
status: na
- task: lint_c_src
status: passed
- task: lint_c_examples
status: na
- task: lint_c_benchmarks
status: na
- task: lint_c_tests_fixtures
status: na
- task: lint_shell
status: na
- task: lint_typescript_declarations
status: passed
- task: lint_typescript_tests
status: na
- task: lint_license_headers
status: passed
---
---
.../blas/ext/base/dlast-index-of/README.md | 10 +++++-----
.../blas/ext/base/dlast-index-of/docs/repl.txt | 4 ++--
.../ext/base/dlast-index-of/docs/types/index.d.ts | 15 +++++++++++++--
.../ext/base/dlast-index-of/examples/index.js | 2 +-
.../blas/ext/base/dlast-index-of/lib/ndarray.js | 14 ++++++--------
.../blas/ext/base/dlast-index-of/src/main.c | 7 ++++---
.../ext/base/dlast-index-of/test/test.ndarray.js | 6 +++---
.../dlast-index-of/test/test.ndarray.native.js | 6 +++---
8 files changed, 37 insertions(+), 27 deletions(-)
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md
index 99f164497ed5..54b2bfa72139 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/README.md
@@ -87,13 +87,13 @@ Note that indexing is relative to the last index. To introduce an offset, use [`
```javascript
var Float64Array = require( '@stdlib/array/float64' );
-// Initial array...
+// Initial array:
var x0 = new Float64Array( [ -2.0, 3.0, -6.0, -4.0, 5.0, 3.0 ] );
-// Create an offset view...
+// Create an offset view:
var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
-// Find index...
+// Find index:
var idx = dlastIndexOf( 5, 3.0, x1, 2 );
// returns 2
```
@@ -159,7 +159,7 @@ var x = discreteUniform( 10, -100, 100, {
});
console.log( x );
-var idx = dlastIndexOf( x.length, 80.0, x, 1 );
+var idx = dlastIndexOf.ndarray( x.length, 80.0, x, 1, 0 );
console.log( idx );
```
@@ -262,7 +262,7 @@ CBLAS_INT stdlib_strided_dlast_index_of_ndarray( const CBLAS_INT N, const double
int main( void ) {
// Create a strided array:
- double x[] = { 1.0, -2.0, 3.0, -4.0, 5.0, 3.0, 7.0, -8.0 };
+ const double x[] = { 1.0, -2.0, 3.0, -4.0, 5.0, 3.0, 7.0, -8.0 };
// Specify the number of indexed elements:
const int N = 8;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt
index 22847bccc0f4..b43c99dd1404 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/repl.txt
@@ -42,8 +42,8 @@
floating-point strided array using alternative indexing semantics.
While typed array views mandate a view offset based on the underlying
- buffer, the offset parameter supports indexing semantics based on a
- starting index.
+ buffer, the offset parameter supports indexing semantics based on a starting
+ index.
Parameters
----------
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts
index 8e2577cbeff6..f46710115c0a 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/docs/types/index.d.ts
@@ -19,13 +19,16 @@
// TypeScript Version: 4.1
/**
-* Interface describing `dlastIndexOf`
-*
+* Interface describing `dlastIndexOf`.
*/
interface Routine {
/**
* Returns the last index of a specified search element in a double-precision floating-point strided array.
*
+ * ## Notes
+ *
+ * - If the function is unable to find a search element, the function returns `-1`.
+ *
* @param N - number of indexed elements
* @param searchElement - search element
* @param x - input array
@@ -45,6 +48,10 @@ interface Routine {
/**
* Returns the last index of a specified search element in a double-precision floating-point strided array using alternative indexing semantics.
*
+ * ## Notes
+ *
+ * - If the function is unable to find a search element, the function returns `-1`.
+ *
* @param N - number of indexed elements
* @param searchElement - search element
* @param x - input array
@@ -66,6 +73,10 @@ interface Routine {
/**
* Returns the last index of a specified search element in a double-precision floating-point strided array.
*
+* ## Notes
+*
+* - If the function is unable to find a search element, the function returns `-1`.
+*
* @param N - number of indexed elements
* @param searchElement - search element
* @param x - input array
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js
index f20a32690e92..56a1fe385bbc 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/examples/index.js
@@ -26,5 +26,5 @@ var x = discreteUniform( 10, -100, 100, {
});
console.log( x );
-var idx = dlastIndexOf.ndarray( 5, 2.0, x, 1, 9 );
+var idx = dlastIndexOf.ndarray( x.length, 80.0, x, 1, 0 );
console.log( idx );
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/ndarray.js
index b85f823bb48c..82bdac9c0131 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/ndarray.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/lib/ndarray.js
@@ -45,21 +45,19 @@ var dindexOf = require( '@stdlib/blas/ext/base/dindex-of' ).ndarray;
*/
function dlastIndexOf( N, searchElement, x, strideX, offsetX ) {
var idx;
- var sv;
- var ov;
-
if ( N <= 0 ) {
return -1;
}
- ov = offsetX + ( ( N - 1 ) * strideX );
- sv = -strideX;
+ // Reverse the iteration order by flipping the stride and adjusting the offset:
+ offsetX += ( N-1 ) * strideX;
+ strideX *= -1;
- // Find index of the search element in the reversed view:
- idx = dindexOf( N, searchElement, x, sv, ov );
+ // Find the index of the search element in the reversed "view":
+ idx = dindexOf( N, searchElement, x, strideX, offsetX );
if ( idx < 0 ) {
return idx;
}
- // Convert the index from reversed view to the forward view:
+ // Convert the index from reversed "view" to an index in the original "view":
idx = N - 1 - idx;
return idx;
}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
index c97b1f0f950d..1b6768466ad7 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/src/main.c
@@ -53,15 +53,16 @@ CBLAS_INT API_SUFFIX(stdlib_strided_dlast_index_of_ndarray)( const CBLAS_INT N,
if ( N <= 0 ) {
return -1;
}
+ // Reverse the iteration order by flipping the stride and adjusting the offset:
ov = offsetX + ( ( N - 1 ) * strideX );
sv = -strideX;
- // Find index of the search element in the reversed view:
- idx = API_SUFFIX(stdlib_strided_dindex_of_ndarray)( N, searchElement, X, sv, ov ); // eslint-disable-line max-len
+ // Find the index of the search element in the reversed "view":
+ idx = API_SUFFIX(stdlib_strided_dindex_of_ndarray)( N, searchElement, X, sv, ov );
if ( idx < 0 ) {
return idx;
}
- // Convert the index from reversed view to the forward view:
+ // Convert the index from reversed "view" to an index in the original "view":
idx = N - 1 - idx;
return idx;
}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
index 50b695ba2cb9..6d843ef4f5e4 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.js
@@ -43,13 +43,13 @@ tape( 'the function returns the last index of an element which equals a provided
actual = dlastIndexOf( x.length, 1.0, x, 1, 0 );
t.strictEqual( actual, 1, 'returns expected value' );
- actual = dlastIndexOf( x.length, 2.0, x, 1, 1 );
+ actual = dlastIndexOf( x.length-1, 2.0, x, 1, 1 );
t.strictEqual( actual, 2, 'returns expected value' );
- actual = dlastIndexOf( x.length, 3.0, x, 1, 2 );
+ actual = dlastIndexOf( x.length-2, 3.0, x, 1, 2 );
t.strictEqual( actual, 3, 'returns expected value' );
- actual = dlastIndexOf( x.length, 4.0, x, 1, 2 );
+ actual = dlastIndexOf( x.length-2, 4.0, x, 1, 2 );
t.strictEqual( actual, -1, 'returns expected value' );
// Negative stride...
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
index 262dc460a842..8e6a168ecb1c 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/dlast-index-of/test/test.ndarray.native.js
@@ -52,13 +52,13 @@ tape( 'the function returns the last index of an element which equals a provided
actual = dlastIndexOf( x.length, 1.0, x, 1, 0 );
t.strictEqual( actual, 1, 'returns expected value' );
- actual = dlastIndexOf( x.length, 2.0, x, 1, 1 );
+ actual = dlastIndexOf( x.length-1, 2.0, x, 1, 1 );
t.strictEqual( actual, 2, 'returns expected value' );
- actual = dlastIndexOf( x.length, 3.0, x, 1, 2 );
+ actual = dlastIndexOf( x.length-2, 3.0, x, 1, 2 );
t.strictEqual( actual, 3, 'returns expected value' );
- actual = dlastIndexOf( x.length, 4.0, x, 1, 2 );
+ actual = dlastIndexOf( x.length-2, 4.0, x, 1, 2 );
t.strictEqual( actual, -1, 'returns expected value' );
// Negative stride...