////
/// @author Takeru Suzuki
////

/// Returns E^x, where x is the argument, and E is Euler's constant, the base of the natural logarithms.
/// @since 1.12.0 - The Sith
/// @param {Number} $x - the number to modify exponentially
/// @return {Number} - a modified number
/// @example
///   exp(1)  // 2.71828
///   exp(-1) // 0.36788
@function exp($x) {
	$ret: 0;

	@for $n from 0 to 24 {
		$ret: $ret + pow($x, $n) / fact($n);
	}

	@return $ret;
}