@stdlib/math-base-ops-csubf NPM

csubf

$NPM version$ $Build Status$ $Coverage Status$

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-ctor' );
var realf = require( '@stdlib/complex-float32-real' );
var imagf = require( '@stdlib/complex-float32-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 = realf( v );
// returns 7.0

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

Examples

var Complex64 = require( '@stdlib/complex-float32-ctor' );
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() );
}

C APIs

Usage

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

stdlib_base_csubf( z1, z2 )

Subtracts two single-precision complex floating-point numbers.

#include "stdlib/complex/float32/ctor.h"
#include "stdlib/complex/float32/real.h"
#include "stdlib/complex/float32/imag.h"

stdlib_complex64_t z1 = stdlib_complex64( 5.0f, 3.0f );
stdlib_complex64_t z2 = stdlib_complex64( -2.0f, 1.0f );
stdlib_complex64_t out = stdlib_base_csubf( z1, z2 );

float re = stdlib_complex64_real( out );
// returns 7.0f

float im = stdlib_complex64_imag( out );
// returns 2.0f

The function accepts the following arguments:

z1: [in] stdlib_complex64_t input value.
z2: [in] stdlib_complex64_t input value.

stdlib_complex64_t stdlib_base_csubf( const stdlib_complex64_t z1, const stdlib_complex64_t z2 );

Examples

#include "stdlib/math/base/ops/csubf.h"
#include "stdlib/complex/float32/ctor.h"
#include "stdlib/complex/float32/reim.h"
#include <stdio.h>

int main( void ) {
    const stdlib_complex64_t x[] = {
        stdlib_complex64( 3.14f, 1.5f ),
        stdlib_complex64( -3.14f, 1.5f ),
        stdlib_complex64( 0.0f, -0.0f ),
        stdlib_complex64( 0.0f/0.0f, 0.0f/0.0f )
    };

    stdlib_complex64_t v;
    stdlib_complex64_t y;
    float re;
    float im;
    int i;
    for ( i = 0; i < 4; i++ ) {
        v = x[ i ];
        stdlib_complex64_reim( v, &re, &im );
        printf( "z = %f + %fi\n", re, im );

        y = stdlib_base_csubf( v, v );
        stdlib_complex64_reim( y, &re, &im );
        printf( "csubf(z, z) = %f + %fi\n", re, im );
    }
}

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.