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feat: add blas/base/dcabs1
PR-URL: stdlib-js#2204 Ref: stdlib-js#2039 Co-authored-by: Athan Reines <[email protected]> Reviewed-by: Athan Reines <[email protected]> Signed-off-by: Athan Reines <[email protected]>
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Diff for: ‎lib/node_modules/@stdlib/blas/base/dcabs1/README.md

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<!--
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@license Apache-2.0
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Copyright (c) 2024 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# dcabs1
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> Compute the sum of the [absolute values][absolute-value] of the real part and imaginary components of a double-precision [complex][@stdlib/complex/float64/ctor] floating-point number.
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<section class="usage">
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## Usage
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```javascript
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var dcabs1 = require( '@stdlib/blas/base/dcabs1' );
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```
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#### dcabs1( z )
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Computes the sum of the [absolute values][absolute-value] of the real part and imaginary components of a double-precision [complex][@stdlib/complex/float64/ctor] floating-point number.
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```javascript
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var Complex128 = require( '@stdlib/complex/float64/ctor' );
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var y = dcabs1( new Complex128( 5.0, -3.0 ) );
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// returns 8.0
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```
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</section>
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<!-- /.usage -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var Complex128 = require( '@stdlib/complex/float64/ctor' );
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var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
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var dcabs1 = require( '@stdlib/blas/base/dcabs1' );
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var z;
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var i;
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for ( i = 0; i < 100; i++ ) {
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z = new Complex128( discreteUniform( -5, 5 ), discreteUniform( -5, 5 ) );
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console.log( 'dcabs1(%s) = %d', z.toString(), dcabs1( z ) );
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}
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```
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</section>
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<!-- /.examples -->
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<!-- C interface documentation. -->
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* * *
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<section class="c">
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## C APIs
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- C usage documentation. -->
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<section class="usage">
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### Usage
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```c
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#include "stdlib/blas/base/dcabs1.h"
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```
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#### c_dcabs1( z )
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Computes the sum of the [absolute values][absolute-value] of the real and imaginary components of a double-precision [complex][@stdlib/complex/float64/ctor] floating-point number.
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```c
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#include "stdlib/complex/float64/ctor.h"
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const stdlib_complex128_t c = stdlib_complex128( 5.0, -3.0 );
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double y = c_dcabs1( z );
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// returns 8.0
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```
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The function accepts the following arguments:
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- **z**: `[in] stdlib_complex128_t` complex number.
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```c
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double c_dcabs1( const stdlib_complex128_t z );
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```
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</section>
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<!-- /.usage -->
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<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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</section>
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<!-- /.notes -->
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<!-- C API usage examples. -->
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<section class="examples">
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### Examples
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```c
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#include "stdlib/blas/base/dcabs1.h"
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#include "stdlib/complex/float64/ctor.h"
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#include "stdlib/complex/real.h"
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#include "stdlib/complex/imag.h"
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#include <stdio.h>
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int main( void ) {
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const stdlib_complex128_t x[] = {
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stdlib_complex128( 3.14, 1.0 ),
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stdlib_complex128( -3.14, -1.0 ),
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stdlib_complex128( 0.0, 0.0 ),
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stdlib_complex128( 0.0/0.0, 0.0/0.0 )
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};
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float y;
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int i;
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for ( i = 0; i < 4; i++ ) {
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y = c_dcabs1( x[ i ] );
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printf( "f(%lf + %lf) = %lf\n", stdlib_real( x[ i ] ), stdlib_imag( x[ i ] ), y );
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}
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}
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```
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</section>
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<!-- /.examples -->
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</section>
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<!-- /.c -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[absolute-value]: https://en.wikipedia.org/wiki/Absolute_value
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[@stdlib/complex/float64/ctor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/complex/float64/ctor
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</section>
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<!-- /.links -->

Diff for: ‎lib/node_modules/@stdlib/blas/base/dcabs1/benchmark/benchmark.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var bench = require( '@stdlib/bench' );
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var discreteUniform = require( '@stdlib/random/base/discrete-uniform' ).factory;
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var isnan = require( '@stdlib/math/base/assert/is-nan' );
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var Complex128 = require( '@stdlib/complex/float64/ctor' );
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var pkg = require( './../package.json' ).name;
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var dcabs1 = require( './../lib' );
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// VARIABLES //
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var rand = discreteUniform( -500.0, 500.0 );
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// MAIN //
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bench( pkg, function benchmark( b ) {
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var values;
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var y;
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var i;
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values = [
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new Complex128( rand(), rand() ),
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new Complex128( rand(), rand() )
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];
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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y = dcabs1( values[ i%values.length ] );
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if ( isnan( y ) ) {
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b.fail( 'should not return NaN' );
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}
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}
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b.toc();
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if ( isnan( y ) ) {
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b.fail( 'should not return NaN' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

Diff for: ‎lib/node_modules/@stdlib/blas/base/dcabs1/benchmark/benchmark.native.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var resolve = require( 'path' ).resolve;
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var bench = require( '@stdlib/bench' );
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var discreteUniform = require( '@stdlib/random/base/discrete-uniform' ).factory;
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var isnan = require( '@stdlib/math/base/assert/is-nan' );
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var Complex128 = require( '@stdlib/complex/float64/ctor' );
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var tryRequire = require( '@stdlib/utils/try-require' );
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var pkg = require( './../package.json' ).name;
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// VARIABLES //
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var dcabs1 = tryRequire( resolve( __dirname, './../lib/native.js' ) );
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var opts = {
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'skip': ( dcabs1 instanceof Error )
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};
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var rand = discreteUniform( -500.0, 500.0 );
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// MAIN //
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bench( pkg+'::native', opts, function benchmark( b ) {
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var values;
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var y;
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var i;
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values = [
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new Complex128( rand(), rand() ),
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new Complex128( rand(), rand() )
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];
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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y = dcabs1( values[ i%values.length ] );
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if ( isnan( y ) ) {
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b.fail( 'should not return NaN' );
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}
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}
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b.toc();
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if ( isnan( y ) ) {
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b.fail( 'should not return NaN' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

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