ParagonIE_Sodium_Core_SipHash::rotl_64( int $int0, int $int1, int $c ): array<int,

115    public static function rotl_64($int0, $int1, $c)116    {117        $int0 &= 0xffffffff;118        $int1 &= 0xffffffff;119        $c &= 63;120        if ($c === 32) {121            return array($int1, $int0);122        }123        if ($c > 31) {124            $tmp = $int1;125            $int1 = $int0;126            $int0 = $tmp;127            $c &= 31;128        }129        if ($c === 0) {130            return array($int0, $int1);131        }132        return array(133            0xffffffff & (134                ($int0 << $c)135                    |136                ($int1 >> (32 - $c))137            ),138            0xffffffff & (139                ($int1 << $c)140                    |141                ($int0 >> (32 - $c))142            ),143        );144    }