| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ORC_MURMUR3_HH |
| #define ORC_MURMUR3_HH |
| |
| #include "orc/orc-config.hh" |
| |
| namespace orc { |
| |
| class Murmur3 { |
| public: |
| static const uint32_t DEFAULT_SEED = 104729; |
| static const uint64_t NULL_HASHCODE = 2862933555777941757LL; |
| |
| static uint64_t hash64(const uint8_t *data, uint32_t len); |
| |
| private: |
| static uint64_t fmix64(uint64_t value); |
| static uint64_t hash64(const uint8_t* data, uint32_t len, uint32_t seed); |
| }; |
| |
| } |
| |
| #endif //ORC_MURMUR3_HH |