@stdlib/complex-reim
v0.2.1
Published
Return the real and imaginary components of a double-precision complex floating-point number.
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reim
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( void ) {
const 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
@stdlib/complex-imag
: return the imaginary component of a double-precision complex floating-point number.@stdlib/complex-real
: return the real component of a double-precision complex floating-point number.
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.