stdlib-js · headlessNode · Jun 5, 2026
diff --git a/lib/node_modules/@stdlib/blas/ext/base/dcunone/README.md b/lib/node_modules/@stdlib/blas/ext/base/dcunone/README.md
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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 The Stdlib Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+-->
+
+# dcunone
+
+> Cumulatively test whether every element in a double-precision floating-point strided array is falsy.
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var dcunone = require( '@stdlib/blas/ext/base/dcunone' );
+```
+
+#### dcunone( N, x, strideX, out, strideOut )
+
+Cumulatively tests whether every element in a double-precision floating-point strided array is falsy.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var BooleanArray = require( '@stdlib/array/bool' );
+
+var x = new Float64Array( [ 0.0, 0.0, 1.0, 1.0 ] );
+var out = new BooleanArray( 4 );
+
+dcunone( x.length, x, 1, out, 1 );
+// out => <BooleanArray>[ true, true, false, false ]
+```
+
+The function has the following parameters:
+
+-   **N**: number of indexed elements.
+-   **x**: input [`Float64Array`][@stdlib/array/float64].
+-   **strideX**: stride length for `x`.
+-   **out**: output [`BooleanArray`][@stdlib/array/bool].
+-   **strideOut**: stride length for `out`.
+
+The `N` and stride parameters determine which elements in the strided arrays are accessed at runtime. For example, to cumulatively test every other element:
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var BooleanArray = require( '@stdlib/array/bool' );
+
+var x = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 ] );
+var out = new BooleanArray( 4 );
+
+dcunone( 4, x, 2, out, 1 );
+// out => <BooleanArray>[ true, true, false, false ]
+```
+
+Note that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
+
+<!-- eslint-disable stdlib/capitalized-comments -->
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var BooleanArray = require( '@stdlib/array/bool' );
+
+// Initial arrays...
+var x0 = new Float64Array( [ 0.0, 0.0, 0.0, 1.0, 1.0, 1.0 ] );
+var o0 = new BooleanArray( x0.length );
+
+// Create offset views...
+var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+var o1 = new BooleanArray( o0.buffer, o0.BYTES_PER_ELEMENT*3 ); // start at 4th element
+
+dcunone( 3, x1, 2, o1, 1 );
+// o0 => <BooleanArray>[ false, false, false, true, false, false ]
+```
+
+#### dcunone.ndarray( N, x, strideX, offsetX, out, strideOut, offsetOut )
+
+Cumulatively tests whether every element in a double-precision floating-point strided array is falsy using alternative indexing semantics.
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var BooleanArray = require( '@stdlib/array/bool' );
+
+var x = new Float64Array( [ 0.0, 0.0, 1.0, 1.0 ] );
+var out = new BooleanArray( 4 );
+
+dcunone.ndarray( x.length, x, 1, 0, out, 1, 0 );
+// out => <BooleanArray>[ true, true, false, false ]
+```
+
+The function has the following additional parameters:
+
+-   **offsetX**: starting index for `x`.
+-   **offsetOut**: starting index for `out`.
+
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, offset parameters support indexing semantics based on starting indices. For example, to cumulatively test every other element starting from the third element:
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var BooleanArray = require( '@stdlib/array/bool' );
+
+var x = new Float64Array( [ 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0 ] );
+var out = new BooleanArray( 3 );
+
+dcunone.ndarray( 3, x, 2, 2, out, 1, 0 );
+// out => <BooleanArray>[ true, false, false ]
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+## Notes
+
+-   If `N <= 0`, both functions return `out` unchanged.
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var uniform = require( '@stdlib/random/array/uniform' );
+var dcunone = require( '@stdlib/blas/ext/base/dcunone' );
+var BooleanArray = require( '@stdlib/array/bool' );
+
+var x = uniform( 10, -10.0, 10.0, {
+    'dtype': 'float64'
+});
+console.log( x );
+
+var out = new BooleanArray( x.length );
+dcunone( x.length, x, 1, out, 1 );
+console.log( out );
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- C interface documentation. -->
+
+* * *
+
+<section class="c">
+
+## C APIs
+
+<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<!-- C usage documentation. -->
+
+<section class="usage">
+
+### Usage
+
+```c
+#include "stdlib/blas/ext/base/dcunone.h"
+```
+
+#### stdlib_strided_dcunone( N, \*X, strideX, \*out, strideOut )
+
+Cumulatively tests whether every element in a double-precision floating-point strided array is falsy.
+
+```c
+const double x[] = { 0.0, 0.0, 1.0, 1.0 };
+bool out[] = { false, false, false, false };
+
+stdlib_strided_dcunone( 4, x, 1, out, 1 );
+```
+
+The function accepts the following arguments:
+
+-   **N**: `[in] CBLAS_INT` number of indexed elements.
+-   **X**: `[in] double*` input array.
+-   **strideX**: `[in] CBLAS_INT` stride length for `X`.
+-   **out**: `[out] bool*` output array.
+-   **strideOut**: `[in] CBLAS_INT` stride length for `out`.
+
+```c
+void stdlib_strided_dcunone( const CBLAS_INT N, const double *X, const CBLAS_INT strideX, bool *out, const CBLAS_INT strideOut );
+```
+
+<!-- lint disable maximum-heading-length -->
+
+#### stdlib_strided_dcunone_ndarray( N, \*X, strideX, offsetX, \*out, strideOut, offsetOut )
+
+<!-- lint enable maximum-heading-length -->
+
+Cumulatively tests whether every element in a double-precision floating-point strided array is falsy using alternative indexing semantics.
+
+```c
+const double x[] = { 0.0, 0.0, 1.0, 1.0 };
+bool out[] = { false, false, false, false };
+
+stdlib_strided_dcunone_ndarray( 4, x, 1, 0, out, 1, 0 );
+```
+
+The function accepts the following arguments:
+
+-   **N**: `[in] CBLAS_INT` number of indexed elements.
+-   **X**: `[in] double*` input array.
+-   **strideX**: `[in] CBLAS_INT` stride length for `X`.
+-   **offsetX**: `[in] CBLAS_INT` starting index for `X`.
+-   **out**: `[out] bool*` output array.
+-   **strideOut**: `[in] CBLAS_INT` stride length for `out`.
+-   **offsetOut**: `[in] CBLAS_INT` starting index for `out`.
+
+```c
+void stdlib_strided_dcunone_ndarray( const CBLAS_INT N, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, bool *out, const CBLAS_INT strideOut, const CBLAS_INT offsetOut );
+```
+
+</section>
+
+<!-- /.usage -->
+
+<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<!-- C API usage examples. -->
+
+<section class="examples">
+
+### Examples
+
+```c
+#include "stdlib/blas/ext/base/dcunone.h"
+#include <stdio.h>
+#include <stdbool.h>
+
+int main( void ) {
+    // Create strided arrays:
+    const double x[] = { 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 0.0, 0.0 };
+    bool out[] = { false, false, false, false, false, false, false, false };
+
+    // Specify the number of indexed elements:
+    const int N = 8;
+
+    // Specify strides:
+    const int strideX = 1;
+    const int strideOut = 1;
+
+    // Cumulatively test whether every element is falsy:
+    stdlib_strided_dcunone( N, x, strideX, out, strideOut );
+
+    // Print the results:
+    for ( int i = 0; i < 8; i++ ) {
+        printf( "out[ %i ] = %s\n", i, out[ i ] ? "true" : "false" );
+    }
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
+<!-- /.related -->
+
+<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="links">
+
+[@stdlib/array/float64]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/float64
+
+[@stdlib/array/bool]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/bool
+
+[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
+
+<!-- <related-links> -->
+
+<!-- </related-links> -->
+
+</section>
+
+<!-- /.links -->