function hypot( x, y ) {
		if ( x > y ) {
			return (alpha*x) + (beta*y);
		}
		return (beta*x) + (alpha*y);
	}
Computes the hypotenuse using the alpha max plus beta min algorithm.

@private
@param {NonNegativeNumber} x - number
@param {NonNegativeNumber} y - number
@returns {number} hypotenuse

@example
var h = hypot( 5.0, 12.0 );
// returns <number>