ParagonIE_Sodium_Core32_Int32::shiftLeft( int $c = 0 ): ParagonIE_Sodium_Core32_Int32

569    public function shiftLeft($c = 0)570    {571        ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);572        /** @var int $c */573        $c = (int) $c;574 575        $return = new ParagonIE_Sodium_Core32_Int32();576        $return->unsignedInt = $this->unsignedInt;577        $c &= 63;578        /** @var int $c */579        if ($c === 0) {580            $return->limbs = $this->limbs;581        } elseif ($c < 0) {582            /** @var int $c */583            return $this->shiftRight(-$c);584        } else {585            /** @var int $c */586            /** @var int $tmp */587            $tmp = $this->limbs[1] << $c;588            $return->limbs[1] = (int)($tmp & 0xffff);589            /** @var int $carry */590            $carry = $tmp >> 16;591 592            /** @var int $tmp */593            $tmp = ($this->limbs[0] << $c) | ($carry & 0xffff);594            $return->limbs[0] = (int) ($tmp & 0xffff);595        }596        return $return;597    }