Maths.php File Reference

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Functions
	hypo ($a, $b)
	Pythagorean Theorem:. More...

Function Documentation

hypo()

hypo	(		$a,
			$b
	)

Pythagorean Theorem:.

a = 3 b = 4 r = sqrt(square(a) + square(b)) r = 5

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

Parameters

mixed	$a
mixed	$b

Returns

float

Definition at line 18 of file Maths.php.

References $r.

Referenced by PhpOffice\PhpSpreadsheet\Shared\JAMA\QRDecomposition\__construct(), PhpOffice\PhpSpreadsheet\Shared\JAMA\SingularValueDecomposition\__construct(), and PhpOffice\PhpSpreadsheet\Shared\JAMA\EigenvalueDecomposition\tql2().

{
    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;
}

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