t('BCMath is not available'), 'description' => t('The Fraction module uses BCMath (when available) to ensure calculations are performed with maximum precision. Without BCMath, Fraction will still work, but normal PHP float arithmetic will be used. For an overview of float arithmetic limitations, see http://php.net/manual/en/language.types.float.php.'), 'severity' => REQUIREMENT_WARNING, ]; } return $requirements; }