hypotf

Compute the hypotenuse avoiding overflow and underflow (single-precision).

Usage

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

hypotf( x, y )

Computes the hypotenuse avoiding overflow and underflow (single-precision).

var h = hypotf( -5.0, 12.0 );
// returns 13.0

h = hypotf( -0.0, -0.0 );
// returns +0.0

If either argument is NaN, the function returns NaN.

var h = hypotf( NaN, 12.0 );
// returns NaN

h = hypotf( 5.0, NaN );
// returns NaN

Examples

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

var x;
var y;
var h;
var i;

for ( i = 0; i < 100; i++ ) {
    x = round( randu()*100.0 ) - 50.0;
    y = round( randu()*100.0 ) - 50.0;
    h = hypotf( x, y );
    console.log( 'h(%d,%d) = %d', x, y, h );
}

C APIs

Usage

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

stdlib_base_hypotf( x, y )

Computes the hypotenuse avoiding overflow and underflow (single-precision).

float h = stdlib_base_hypotf( 5.0f, 12.0f );
// returns 13.0f

The function accepts the following arguments:

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

float stdlib_base_hypotf( const float x, const float y );

Examples

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

int main( void ) {
    const float x[] = { 3.0f, 4.0f, 5.0f, 12.0f };

    float y;
    int i;
    for ( i = 0; i < 4; i += 2 ) {
        y = stdlib_base_hypotf( x[ i ], x[ i+1 ] );
        printf( "hypot(%f, %f) = %f\n", x[ i ], x[ i+1 ], y );
    }
}