function hypotf( x, y ) {
	return addon( x, y );
}
Computes the hypotenuse avoiding overflow and underflow (single-precision).

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

@example
var h = hypotf( -5.0, 12.0 );
// returns 13.0

@example
var h = hypotf( NaN, 12.0 );
// returns NaN

@example
var h = hypotf( -0.0, -0.0 );
// returns 0.0