Get a random number between two numbers in scss

random-number-between-two.scss

// Given two numbers return the biggest one
@function get-biggest-num-between($a, $b) {
  $c: null;
  @if ($a > $b) {
    $c : $a;
  }
  @if ($a < $b) {
    $c : $b;
  }
  @else if ($a = $b){
    @error 'Numbers must be different. #{$a} and #{$b} were given'
  }
  @return $c;
}

// Given two numbers return the smallest one
@function get-smallest-num-between($a, $b) {
  $c: null;
  @if ($a < $b) {
    $c : $a;
  }
  @if ($a > $b) {
    $c : $b;
  }
  @else if ($a == $b){
    @error 'Numbers must be different. #{$a} and #{$b} were given'
  }
  @return $c;
}
// Description: Get a random number between two numbers
//
/// @throw Error if params are equal numbers
/// @throw Error if resulting value is not a number
// @example
//   Given 4 and 8
//   @return 5, 6, 7 or 8
@function random-num-between($a, $b) {
  $biggest: get-biggest-num-between($a, $b);
  $smallest: get-smallest-num-between($a, $b);
  $needle: null;
  $found: false;
  @while $found == false {
    $scale: random($biggest);
    @if($scale > $smallest){
      $found: true;
      $needle: $scale;
    }
  }
  @if(type-of($needle) != number){
    @error 'Function returned a non number value: #{$needle} is #{type-of($needle)}'
  }
  @return $needle;
}