ParagonIE_Sodium_Core_BLAKE2b::xor64( SplFixedArray $x, SplFixedArray $y ): SplFixedArray

126    protected static function xor64(SplFixedArray $x, SplFixedArray $y)127    {128        if (PHP_INT_SIZE === 4) {129            throw new SodiumException("Error, use 32-bit");130        }131        if (!is_numeric($x[0])) {132            throw new SodiumException('x[0] is not an integer');133        }134        if (!is_numeric($x[1])) {135            throw new SodiumException('x[1] is not an integer');136        }137        if (!is_numeric($y[0])) {138            throw new SodiumException('y[0] is not an integer');139        }140        if (!is_numeric($y[1])) {141            throw new SodiumException('y[1] is not an integer');142        }143        return self::new64(144            (int) (($x[0] ^ $y[0]) & 0xffffffff),145            (int) (($x[1] ^ $y[1]) & 0xffffffff)146        );147    }