maxabs

Return the maximum absolute value.

Usage

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

maxabs( x, y )

Returns the maximum absolute value.

var v = maxabs( -4.2, 3.14 );
// returns 4.2

v = maxabs( +0.0, -0.0 );
// returns +0.0

If any argument is NaN, the function returns NaN.

var v = maxabs( 4.2, NaN );
// returns NaN

v = maxabs( NaN, 3.14 );
// returns NaN

Examples

var randu = require( '@stdlib/random/base/randu' );
var maxabs = require( '@stdlib/math/base/special/maxabs' );

var x;
var y;
var v;
var i;

for ( i = 0; i < 100; i++ ) {
    x = ( randu()*1000.0 ) - 500.0;
    y = ( randu()*1000.0 ) - 500.0;
    v = maxabs( x, y );
    console.log( 'maxabs(%d,%d) = %d', x, y, v );
}

C APIs

Usage

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

stdlib_base_maxabs( x, y )

Returns the maximum absolute value.

double out = stdlib_base_maxabs( -4.2, 3.14 );
// returns 4.2

out = stdlib_base_maxabs( 0.0, -0.0 );
// returns +0.0

The function accepts the following arguments:

x: [in] double input value.
y: [in] double input value.

double stdlib_base_maxabs( const double x, const double y );

Examples

#include "stdlib/math/base/special/maxabs.h"
#include <stdlib.h>
#include <stdio.h>

int main( void ) {
    double x;
    double y;
    double v;
    int i;
    
    for ( i = 0; i < 100; i++ ) {
        x = ( ( (double)rand() / (double)RAND_MAX ) * 1000.0 ) - 500.0;
        y = ( ( (double)rand() / (double)RAND_MAX ) * 1000.0 ) - 500.0;
        v = stdlib_base_maxabs( x, y );
        printf( "x: %lf, y: %lf, maxabs(x, y): %lf\n", x, y, v );
    }
}