<?php

/**

 *	@package JAMA

 *

 *	Pythagorean Theorem:

 *

 *	a = 3

 *	b = 4

 *	r = sqrt(square(a) + square(b))

 *	r = 5

 *

 *	r = sqrt(a^2 + b^2) without under/overflow.

 */

function hypo($a, $b) {

	if (abs($a) > abs($b)) {

		$r = $b / $a;

		$r = abs($a) * sqrt(1 + $r * $r);

	} elseif ($b != 0) {

		$r = $a / $b;

		$r = abs($b) * sqrt(1 + $r * $r);

	} else {

		$r = 0.0;

	}

	return $r;

}	//	function hypo()





/**

 *	Mike Bommarito's version.

 *	Compute n-dimensional hyotheneuse.

 *

function hypot() {

	$s = 0;

	foreach (func_get_args() as $d) {

		if (is_numeric($d)) {

			$s += pow($d, 2);

		} else {

			throw new PHPExcel_Calculation_Exception(JAMAError(ArgumentTypeException));

		}

	}

	return sqrt($s);

}

*/

