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mul

Multiply two double-precision complex floating-point numbers.

Usage

import mul from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-base-mul@deno/mod.js';

You can also import the following named exports from the package:

import { assign, strided } from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-base-mul@deno/mod.js';

mul( z1, z2 )

Multiplies two double-precision complex floating-point numbers.

import Complex128 from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-ctor@deno/mod.js';

var z1 = new Complex128( 5.0, 3.0 );
var z2 = new Complex128( -2.0, 1.0 );

var v = mul( z1, z2 );
// returns <Complex128>[ -13.0, -1.0 ]

The function supports the following parameters:

z1: first complex number.
z2: second complex number.

mul.assign( re1, im1, re2, im2, out, strideOut, offsetOut )

Multiplies two double-precision complex floating-point numbers and assigns results to a provided output array.

import Float64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-float64@deno/mod.js';

var out = new Float64Array( 2 );
var v = mul.assign( 5.0, 3.0, -2.0, 1.0, out, 1, 0 );
// returns <Float64Array>[ -13.0, -1.0 ]

var bool = ( out === v );
// returns true

The function supports the following parameters:

re1: real component of the first complex number.
im1: imaginary component of the first complex number.
re2: real component of the second complex number.
im2: imaginary component of the second complex number.
out: output array.
strideOut: stride length for out.
offsetOut: starting index for out.

mul.strided( z1, sz1, oz1, z2, sz2, oz2, out, so, oo )

Multiplies two double-precision complex floating-point numbers stored in real-valued strided array views and assigns results to a provided strided output array.

import Float64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-float64@deno/mod.js';

var z1 = new Float64Array( [ 5.0, 3.0 ] );
var z2 = new Float64Array( [ -2.0, 1.0 ] );
var out = new Float64Array( 2 );

var v = mul.strided( z1, 1, 0, z2, 1, 0, out, 1, 0 );
// returns <Float64Array>[ -13.0, -1.0 ]

var bool = ( out === v );
// returns true

The function supports the following parameters:

z1: first complex number strided array view.
sz1: stride length for z1.
oz1: starting index for z1.
z2: second complex number strided array view.
sz2: stride length for z2.
oz2: starting index for z2.
out: output array.
so: stride length for out.
oo: starting index for out.

Examples

import Complex128Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-complex128@deno/mod.js';
import discreteUniform from 'https://cdn.jsdelivr.net/gh/stdlib-js/random-array-discrete-uniform@deno/mod.js';
import logEachMap from 'https://cdn.jsdelivr.net/gh/stdlib-js/console-log-each-map@deno/mod.js';
import mul from 'https://cdn.jsdelivr.net/gh/stdlib-js/complex-float64-base-mul@deno/mod.js';

// Generate arrays of random values:
var z1 = new Complex128Array( discreteUniform( 200, -50, 50 ) );
var z2 = new Complex128Array( discreteUniform( 200, -50, 50 ) );

// Perform element-wise multiplication:
logEachMap( '(%s) * (%s) = %s', z1, z2, mul );

See Also

@stdlib/complex-float64/base/add: add two double-precision complex floating-point numbers.
@stdlib/complex-float64/base/div: divide two complex numbers.
@stdlib/complex-float64/base/sub: subtract two double-precision complex floating-point numbers.

Notice

This package is part of stdlib, a standard library with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2025. The Stdlib Authors.

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