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

/// Returns base to the exponent power.
/// @since 1.12.0 - The Sith
/// @param {Number} $base The base number
/// @param {Number} $exp The exponent to which to raise base
/// @return {Number} - modified number
/// @example
///   pow(4, 2)   // 16
///   pow(4, -2)  // 0.0625
///   pow(4, 0.2) // 1.31951
@function pow($base, $exp) {
	@if $exp == floor($exp) {
		$r: 1;
		$s: 0;

		@if $exp < 0 {
			$exp: $exp * -1;
			$s: 1;
		}

		@while $exp > 0 {
			@if $exp % 2 == 1 {
				$r: $r * $base;
			}

			$exp: floor($exp * .5);
			$base: $base * $base;
		}

		@return if($s != 0, 1 / $r, $r);
	} @else {
		@return exp(log($base) * $exp);
	}
}