core/bourbon/utilities/_gamma.scss
@charset "UTF-8";
/// Performs gamma correction on a single color channel.
///
/// Note that the calculation is approximate if a `pow()` is not available.
///
/// @argument {number (0-1)} $channel
///
/// @return {number (0-1)}
///
/// @access private
@use "sass:math";
@function _gamma($channel) {
@if $channel < 0.03928 {
@return math.div($channel, 12.92);
} @else {
$c: math.div($channel + 0.055, 1.055);
@if function-exists("pow") {
@return pow($c, 2.4);
} @else {
@return 0.56 * $c * $c * $c + 0.44 * $c * $c;
}
}
}