| // Copyright 2018 The Abseil Authors. |
| // |
| // Licensed 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 |
| // |
| // https://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. |
| |
| #include "absl/hash/internal/hash.h" |
| |
| namespace absl { |
| ABSL_NAMESPACE_BEGIN |
| namespace hash_internal { |
| |
| uint64_t CityHashState::CombineLargeContiguousImpl32(uint64_t state, |
| const unsigned char* first, |
| size_t len) { |
| while (len >= PiecewiseChunkSize()) { |
| state = |
| Mix(state, absl::hash_internal::CityHash32(reinterpret_cast<const char*>(first), |
| PiecewiseChunkSize())); |
| len -= PiecewiseChunkSize(); |
| first += PiecewiseChunkSize(); |
| } |
| // Handle the remainder. |
| return CombineContiguousImpl(state, first, len, |
| std::integral_constant<int, 4>{}); |
| } |
| |
| uint64_t CityHashState::CombineLargeContiguousImpl64(uint64_t state, |
| const unsigned char* first, |
| size_t len) { |
| while (len >= PiecewiseChunkSize()) { |
| state = |
| Mix(state, absl::hash_internal::CityHash64(reinterpret_cast<const char*>(first), |
| PiecewiseChunkSize())); |
| len -= PiecewiseChunkSize(); |
| first += PiecewiseChunkSize(); |
| } |
| // Handle the remainder. |
| return CombineContiguousImpl(state, first, len, |
| std::integral_constant<int, 8>{}); |
| } |
| |
| ABSL_CONST_INIT const void* const CityHashState::kSeed = &kSeed; |
| |
| } // namespace hash_internal |
| ABSL_NAMESPACE_END |
| } // namespace absl |