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    @stdlib/complex-realf
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    0.0.1 • Public • Published

    realf

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    Return the real component of a single-precision complex floating-point number.

    Installation

    npm install @stdlib/complex-realf

    Usage

    var realf = require( '@stdlib/complex-realf' );

    realf( z )

    Returns the real component of a single-precision complex floating-point number.

    var Complex64 = require( '@stdlib/complex-float32' );
    
    var z = new Complex64( 5.0, 3.0 );
    var re = realf( z );
    // returns 5.0

    Examples

    var Complex64 = require( '@stdlib/complex-float32' );
    var randu = require( '@stdlib/random-base-randu' );
    var round = require( '@stdlib/math-base-special-round' );
    var realf = require( '@stdlib/complex-realf' );
    
    var re;
    var im;
    var z;
    var i;
    
    for ( i = 0; i < 100; i++ ) {
        re = round( (randu()*100.0) - 50.0 );
        im = round( (randu()*50.0) - 25.0 );
        z = new Complex64( re, im );
        console.log( 'realf(%s) = %d', z.toString(), realf( z ) );
    }

    C APIs

    Usage

    #include "stdlib/complex/realf.h"

    stdlib_realf( z )

    Returns the real component of a single-precision complex floating-point number.

    #include "stdlib/complex/float32.h"
    
    stdlib_complex64_t z = stdlib_complex64( 5.0f, 2.0f );
    
    // ...
    
    float re = stdlib_realf( z );
    // returns 5.0f

    The function accepts the following arguments:

    • z: [in] stdlib_complex64_t single-precision complex floating-point number.
    float stdlib_realf( const stdlib_complex64_t z );

    Examples

    #include "stdlib/complex/realf.h"
    #include "stdlib/complex/float32.h"
    #include <stdio.h>
    
    int main() {
        stdlib_complex64_t x[] = {
            stdlib_complex64( 5.0f, 2.0f ),
            stdlib_complex64( -2.0f, 1.0f ),
            stdlib_complex64( 0.0f, -0.0f ),
            stdlib_complex64( 0.0f/0.0f, 0.0f/0.0f )
        };
    
        int i;
        for ( i = 0; i < 4; i++ ) {
            printf( "realf(v) = %f\n", stdlib_realf( x[ i ] ) );
        }
    }

    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.

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    License

    See LICENSE.

    Copyright

    Copyright © 2016-2022. The Stdlib Authors.

    Install

    npm i @stdlib/complex-realf

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    36,201

    Version

    0.0.1

    License

    Apache-2.0

    Unpacked Size

    40.5 kB

    Total Files

    12

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser