Subversion Repositories eFlore/Applications.cel

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2388 jpm 1 
<?php
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/**
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 *	@package JAMA
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 *
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 *	Pythagorean Theorem:
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 *
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 *	a = 3
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 *	b = 4
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 *	r = sqrt(square(a) + square(b))
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 *	r = 5
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 *
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 *	r = sqrt(a^2 + b^2) without under/overflow.
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 */
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function hypo($a, $b) {
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	if (abs($a) > abs($b)) {
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		$r = $b / $a;
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		$r = abs($a) * sqrt(1 + $r * $r);
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	} elseif ($b != 0) {
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		$r = $a / $b;
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		$r = abs($b) * sqrt(1 + $r * $r);
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	} else {
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		$r = 0.0;
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	}
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	return $r;
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}	//	function hypo()
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/**
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 *	Mike Bommarito's version.
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 *	Compute n-dimensional hyotheneuse.
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 *
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function hypot() {
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	$s = 0;
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	foreach (func_get_args() as $d) {
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		if (is_numeric($d)) {
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			$s += pow($d, 2);
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		} else {
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			throw new PHPExcel_Calculation_Exception(JAMAError(ArgumentTypeException));
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		}
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	}
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	return sqrt($s);
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}
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*/