Sass functions

_functions.scss

/**
 * @file
 * A collection of sass functions.
 */

/** 
 * spacing unit
 * This function returns either the base spacing unit, or
 * the modification passed through. Accepts fractions or decimals
 *
 * @TODO
 *   Create error reporting for improper variables
 */
@function spacing-unit($unit: $base-spacing-unit) {
  @if $unit == $base-spacing-unit {
    @return $unit;
  } @else {
    @return $unit * $base-spacing-unit;
  }
}