230     protected static function addHelper(array $x_value, $x_negative, array $y_value, $y_negative)  function in phpseclib3\\Math\\BigInteger\\Engines\\PHP
334             $temp = self::addHelper($x_value, false, $y_value, false);
458         $z1 = self::addHelper($x1, false, $x0, false);
459         $temp = self::addHelper($y1, false, $y0, false);
461         $temp = self::addHelper($z2, false, $z0, false);
467         $xy = self::addHelper($z2, false, $z1[self::VALUE], $z1[self::SIGN]);
468         $xy = self::addHelper($xy[self::VALUE], $xy[self::SIGN], $z0, false);
1070         $z1 = self::addHelper($x1, false, $x0, false);
1072         $temp = self::addHelper($z2, false, $z0, false);
1078         $xx = self::addHelper($z2, false, $z1[self::VALUE], $z1[self::SIGN]);
1079         $xx = self::addHelper($xx[self::VALUE], $xx[self::SIGN], $z0, false);