50     private static $mainEngine;  variable in phpseclib3\\Math\\BigInteger
105         self::$mainEngine = $fqmain;
145         if (!isset(self::$mainEngine)) {
175         if ($x instanceof self::$mainEngine) {
181             $this->value = new self::$mainEngine($x, $base);
622         $class = self::$mainEngine;
665         $class = self::$mainEngine;
681         $class = self::$mainEngine;
696         $class = self::$mainEngine;
715         $class = self::$mainEngine;
766         $class = self::$mainEngine;
781         $class = self::$mainEngine;
861         $class = self::$mainEngine;