reim

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

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 ] );
}

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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 );
    }
}

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See Also

• @stdlib/complex/imag: return the imaginary component of a complex number.
• @stdlib/complex/real: return the real component of a complex number.