@stdlib/complex-reim
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    0.0.6 • Public • Published

    reim

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    Return the real and imaginary components of a double-precision complex floating-point number.

    Installation

    npm install @stdlib/complex-reim

    Usage

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

    reim( z )

    Returns the real and imaginary components of a double-precision complex floating-point number.

    var Complex128 = require( '@stdlib/complex-float64' );
    
    var z = new Complex128( 5.0, 3.0 );
    var out = reim( z );
    // returns <Float64Array>[ 5.0, 3.0 ]

    Examples

    var Complex128 = require( '@stdlib/complex-float64' );
    var randu = require( '@stdlib/random-base-randu' );
    var round = require( '@stdlib/math-base-special-round' );
    var reim = require( '@stdlib/complex-reim' );
    
    var out;
    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 Complex128( re, im );
        out = reim( z );
        console.log( '%s => %d, %d', z.toString(), out[ 0 ], out[ 1 ] );
    }

    C APIs

    Usage

    #include "stdlib/complex/reim.h"

    stdlib_reim( z, *re, *im )

    Returns the real and imaginary components of a double-precision complex floating-point number.

    #include "stdlib/complex/float64.h"
    
    stdlib_complex128_t z = stdlib_complex128( 5.0, 2.0 );
    
    // ...
    
    double re;
    double im;
    
    stdlib_reim( z, &re, &im );

    The function accepts the following arguments:

    • z: [in] stdlib_complex128_t double-precision complex floating-point number.
    • re: [out] double* destination for real component.
    • im: [out] double* destination for imaginary component.
    void stdlib_reim( const stdlib_complex128_t z, double *re, double *im );

    Examples

    #include "stdlib/complex/reim.h"
    #include "stdlib/complex/float64.h"
    #include <stdio.h>
    
    int main() {
        stdlib_complex128_t x[] = {
            stdlib_complex128( 5.0, 2.0 ),
            stdlib_complex128( -2.0, 1.0 ),
            stdlib_complex128( 0.0, -0.0 ),
            stdlib_complex128( 0.0/0.0, 0.0/0.0 )
        };
    
        double re;
        double im;
        int i;
        for ( i = 0; i < 4; i++ ) {
            stdlib_reim( x[ i ], &re, &im );
            printf( "reim(v) = %lf, %lf\n", re, im );
        }
    }

    See Also


    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-reim

    Homepage

    stdlib.io

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    Version

    0.0.6

    License

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    Total Files

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