csubf

Subtract two single-precision complex floating-point numbers.

Installation

npm install @stdlib/complex-float32-base-sub

Usage

var csubf = require( '@stdlib/complex-float32-base-sub' );

csubf( z1, z2 )

Subtracts two single-precision complex floating-point numbers.

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

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

var v = csubf( z1, z2 );
// returns <Complex64>[ 7.0, 2.0 ]

Examples

var Complex64Array = require( '@stdlib/array-complex64' );
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var csubf = require( '@stdlib/complex-float32-base-sub' );

// Generate arrays of random values:
var z1 = new Complex64Array( discreteUniform( 200, -50, 50 ) );
var z2 = new Complex64Array( discreteUniform( 200, -50, 50 ) );

// Perform element-wise subtraction:
logEachMap( '(%s) - (%s) = %s', z1, z2, csubf );

C APIs

Usage

#include "stdlib/complex/float32/base/sub.h"

stdlib_base_complex64_sub( 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_complex64_sub( 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_complex64_sub( const stdlib_complex64_t z1, const stdlib_complex64_t z2 );

Examples

#include "stdlib/complex/float32/base/sub.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_complex64_sub( v, v );
        stdlib_complex64_reim( y, &re, &im );
        printf( "csubf(z, z) = %f + %fi\n", re, im );
    }
}

See Also

• @stdlib/complex-float32/base/add: add two single-precision complex floating-point numbers.
• @stdlib/complex-float32/base/mul: multiply two single-precision complex floating-point numbers.
• @stdlib/complex-float64/base/sub: subtract two double-precision complex floating-point numbers.

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

License

See LICENSE.

Copyright

Copyright © 2016-2026. The Stdlib Authors.