@stdlib/math-base-ops-csubf

csubf

Subtract two single-precision complex floating-point numbers.

Installation

npm install @stdlib/math-base-ops-csubf

Usage

var csubf = require( '@stdlib/math-base-ops-csubf' );

csubf( z1, z2 )

Subtracts two single-precision complex floating-point numbers.

var Complex64 = require( '@stdlib/complex-float32' );
var real = require( '@stdlib/complex-real' );
var imag = require( '@stdlib/complex-imag' );

var z1 = new Complex64( 5.0, 3.0 );
var z2 = new Complex64( -2.0, 1.0 );

var v = csubf( z1, z2 );
// returns <Complex64>

var re = real( v );
// returns 7.0

var im = imag( v );
// returns 2.0

Examples

var Complex64 = require( '@stdlib/complex-float32' );
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var csubf = require( '@stdlib/math-base-ops-csubf' );

var rand;
var z1;
var z2;
var z3;
var i;

rand = discreteUniform( -50, 50 );
for ( i = 0; i < 100; i++ ) {
    z1 = new Complex64( rand(), rand() );
    z2 = new Complex64( rand(), rand() );
    z3 = csubf( z1, z2 );
    console.log( '(%s) - (%s) = %s', z1.toString(), z2.toString(), z3.toString() );
}

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C APIs

Usage

#include "stdlib/math/base/ops/csubf.h"

stdlib_base_csubf( z1, z2 )

Subtracts two single-precision complex floating-point numbers.

#include <complex.h>

float complex z1 = 5.0f + 3.0f*I;
float complex z2 = -2.0f + 1.0f*I;

float complex out = stdlib_base_csubf( z1, z2 );
// returns 7.0f+2.0f*I

The function accepts the following arguments:

• z1: [in] float complex input value.
• z2: [in] float complex input value.

float complex stdlib_base_csubf( const float complex z1, const float complex z2 );

Examples

#include "stdlib/math/base/ops/csubf.h"
#include <stdio.h>
#include <complex.h>

int main() {
    float complex x[] = { 3.14f+1.5f*I, -3.14f-1.5f*I, 0.0f+0.0f*I, 0.0f/0.0f+0.0f/0.0f*I };

    float complex v;
    float complex y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        v = x[ i ];
        y = stdlib_base_csubf( v, v );
        printf( "z = %f + %fi\ncsubf(z, z) = %f + %fi\n", crealf( v ), cimagf( v ), crealf( y ), cimagf( y ) );
    }
}

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Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, 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

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License

See LICENSE.

Copyright

Copyright © 2016-2022. The Stdlib Authors.