function min( x, y ) {
	return addon( x, y );
}
Returns the minimum value.

@private
@param {number} x - first number
@param {number} y - second number
@returns {number} minimum value

@example
var v = min( 4.2, 3.14 );
// returns 3.14

@example
var v = min( 0.0, -0.0 );
// returns -0.0

@example
var v = min( 3.14, NaN );
// returns NaN

@example
var v = min( NaN, 5.0 );
// returns 5.0