function hypot( x, y ) {
	x = abs( x );
	y = abs( y );
	if ( x > y ) {
		return x + (y>>>2);
	}
	return (x>>>2) + y;
}
Computes the hypotenuse using the alpha max plus beta min algorithm, where `alpha = 1` and `beta = 1/4`.

@private
@param {integer32} x - integer
@param {integer32} y - integer
@returns {number} hypotenuse

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