function minabs( x, y ) {
	x = abs( x );
	y = abs( y );
	return ( x > y ) ? y : x;
}
Returns the minimum value of `|x|` and `|y|`.

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

@example
var z = minabs( -3.14, -11.0 );
// returns 3.14