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[theme-danix.xyz.git] / assets / sass / bourbon / bourbon / utilities / _gamma.scss
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2d3ca553 1@charset "UTF-8";
2
3/// Performs gamma correction on a single color channel.
4///
5/// Note that the calculation is approximate if a `pow()` is not available.
6///
7/// @argument {number (0-1)} $channel
8///
9/// @return {number (0-1)}
10///
11/// @access private
12
13@function _gamma($channel) {
14 @if $channel < 0.03928 {
15 @return $channel / 12.92;
16 } @else {
17 $c: ($channel + 0.055) / 1.055;
18 @if function-exists("pow") {
19 @return pow($c, 2.4);
20 } @else {
21 @return 0.56 * $c * $c * $c + 0.44 * $c * $c;
22 }
23 }
24}