_frac-reduce.scss

// Reduce a fraction
// @param {Number} $a
// @param {Number} $b
// @returns {Array} - A reduced fraction
@function frac-reduce ($a, $b) {
  $gcd: gcd($a, $b);
  @return $a / $gcd, $b / $gcd;
}

// Find the greatest common divisor
// @param {Number} $a
// @param {Number} $b
// @returns {Number} - The greatest common divisor
@function gcd ($a, $b) {
  @return if($b == 0, $a, gcd($b, $a % $b));
}

// Find the least common multiple
// @param {Number} $a
// @param {Number} $b
// @returns {Number} - The least common multiple
@function lcm ($a, $b) {
  @return $a * $b / gcd($a, $b);
}