scabs1

Compute the sum of the absolute values of the real and imaginary components of a single-precision complex floating-point number.

Installation

npm install @stdlib/blas-base-scabs1

Usage

var scabs1 = require( '@stdlib/blas-base-scabs1' );

scabs1( z )

Computes the sum of the absolute values of the real and imaginary components of a single-precision complex floating-point number.

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

var y = scabs1( new Complex64( 5.0, -3.0 ) );
// returns 8.0

Examples

var Complex64 = require( '@stdlib/complex-float32-ctor' );
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var scabs1 = require( '@stdlib/blas-base-scabs1' );

var c;
var i;
for ( i = 0; i < 100; i++ ) {
    c = new Complex64( discreteUniform( -50, 50 ), discreteUniform( -50, 50 ) );
    console.log( 'scabs1(%s) = %d', c.toString(), scabs1( c ) );
}

C APIs

Usage

#include "stdlib/blas/base/scabs1.h"

c_scabs1( c )

Computes the sum of the absolute values of the real and imaginary components of a single-precision complex floating-point number.

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

const stdlib_complex64_t c = stdlib_complex64( 5.0f, -3.0f );

float y = c_scabs1( c );
// returns 8.0f

The function accepts the following arguments:

• c: [in] stdlib_complex64_t complex number.

float c_scabs1( const stdlib_complex64_t c );

Examples

#include "stdlib/blas/base/scabs1.h"
#include "stdlib/complex/float32/ctor.h"
#include "stdlib/complex/float32/real.h"
#include "stdlib/complex/float32/imag.h"
#include <stdio.h>

int main( void ) {
    const stdlib_complex64_t x[] = {
        stdlib_complex64( 3.14f, 1.0f ),
        stdlib_complex64( -3.14f, -1.0f ),
        stdlib_complex64( 0.0f, 0.0f ),
        stdlib_complex64( 0.0f/0.0f, 0.0f/0.0f )
    };

    float y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        y = c_scabs1( x[ i ] );
        printf( "f(%f + %f) = %f\n", stdlib_complex64_real( x[ i ] ), stdlib_complex64_imag( x[ i ] ), y );
    }
}

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 © 2016-2024. The Stdlib Authors.