croundf

Round each component of a single-precision complex floating-point number to the nearest integer.

Usage

var croundf = require( '@stdlib/math/base/special/croundf' );

croundf( z )

Rounds each component of a single-precision complex floating-point number to the nearest integer.

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

var v = croundf( new Complex64( -4.2, 5.5 ) );
// returns <Complex64>

var re = real( v );
// returns -4.0

var im = imag( v );
// returns 6.0

v = croundf( new Complex64( 9.99999, 0.1 ) );
// returns <Complex64>

re = real( v );
// returns 10.0

im = imag( v );
// returns 0.0

v = croundf( new Complex64( 0.0, 0.0 ) );
// returns <Complex64>

re = real( v );
// returns 0.0

im = imag( v );
// returns 0.0

v = croundf( new Complex64( NaN, NaN ) );
// returns <Complex64>

re = real( v );
// returns NaN

im = imag( v );
// returns NaN

Examples

var uniform = require( '@stdlib/random/base/uniform' ).factory;
var Complex64 = require( '@stdlib/complex/float32/ctor' );
var croundf = require( '@stdlib/math/base/special/croundf' );

var rand = uniform( -50.0, 50.0 );

var z;
var i;
for ( i = 0; i < 100; i++ ) {
    z = new Complex64( rand(), rand() );
    console.log( 'croundf(%s) = %s', z, croundf( z ) );
}

C APIs

Usage

#include "stdlib/math/base/special/croundf.h"

stdlib_base_croundf( z )

Rounds each component of a single-precision complex floating-point number to the nearest integer.

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

stdlib_complex64_t z = stdlib_complex64( -4.2, 5.5 );

stdlib_complex64_t out = stdlib_base_croundf( z );

float re = stdlib_complex64_real( out );
// returns -4.0

float im = stdlib_complex64_imag( out );
// returns 6.0

The function accepts the following arguments:

z: [in] stdlib_complex64_t input value.

stdlib_complex64_t stdlib_base_croundf( const stdlib_complex64_t z );

Examples

#include "stdlib/math/base/special/croundf.h"
#include "stdlib/complex/float32/ctor.h"
#include "stdlib/complex/float32/reim.h"
#include <stdio.h>

int main( void ) {
    const stdlib_complex64_t x[] = {
        stdlib_complex64( 3.14, 1.5 ),
        stdlib_complex64( -3.14, -1.5 ),
        stdlib_complex64( 0.0, 0.0 ),
        stdlib_complex64( 0.0/0.0, 0.0/0.0 )
    };

    stdlib_complex64_t v;
    stdlib_complex64_t y;
    float re1;
    float im1;
    float re2;
    float im2;
    int i;
    for ( i = 0; i < 4; i++ ) {
        v = x[ i ];
        y = stdlib_base_croundf( v );
        stdlib_complex64_reim( v, &re1, &im1 );
        stdlib_complex64_reim( y, &re2, &im2 );
        printf( "croundf(%f + %fi) = %f + %fi\n", re1, im1, re2, im2 );
    }
}