csubf

Subtract two single-precision complex floating-point numbers.

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 );
    }
}