microsoft/onnxruntime-extensions
Publicmirrored fromhttps://github.com/microsoft/onnxruntime-extensionsAvailable
cmake/externals/farmhash/dev/f.cc
99lines · modecode
| 1 | namespace NAMESPACE_FOR_HASH_FUNCTIONS { |
| 2 | |
| 3 | // BASIC STRING HASHING |
| 4 | |
| 5 | // Hash function for a byte array. See also Hash(), below. |
| 6 | // May change from time to time, may differ on different platforms, may differ |
| 7 | // depending on NDEBUG. |
| 8 | uint32_t Hash32(const char* s, size_t len) { |
| 9 | return DebugTweak( |
| 10 | (can_use_sse41 & x86_64) ? farmhashnt::Hash32(s, len) : |
| 11 | (can_use_sse42 & can_use_aesni) ? farmhashsu::Hash32(s, len) : |
| 12 | can_use_sse42 ? farmhashsa::Hash32(s, len) : |
| 13 | farmhashmk::Hash32(s, len)); |
| 14 | } |
| 15 | |
| 16 | // Hash function for a byte array. For convenience, a 32-bit seed is also |
| 17 | // hashed into the result. |
| 18 | // May change from time to time, may differ on different platforms, may differ |
| 19 | // depending on NDEBUG. |
| 20 | uint32_t Hash32WithSeed(const char* s, size_t len, uint32_t seed) { |
| 21 | return DebugTweak( |
| 22 | (can_use_sse41 & x86_64) ? farmhashnt::Hash32WithSeed(s, len, seed) : |
| 23 | (can_use_sse42 & can_use_aesni) ? farmhashsu::Hash32WithSeed(s, len, seed) : |
| 24 | can_use_sse42 ? farmhashsa::Hash32WithSeed(s, len, seed) : |
| 25 | farmhashmk::Hash32WithSeed(s, len, seed)); |
| 26 | } |
| 27 | |
| 28 | // Hash function for a byte array. For convenience, a 64-bit seed is also |
| 29 | // hashed into the result. See also Hash(), below. |
| 30 | // May change from time to time, may differ on different platforms, may differ |
| 31 | // depending on NDEBUG. |
| 32 | uint64_t Hash64(const char* s, size_t len) { |
| 33 | return DebugTweak( |
| 34 | (can_use_sse42 & x86_64) ? |
| 35 | farmhashte::Hash64(s, len) : |
| 36 | farmhashxo::Hash64(s, len)); |
| 37 | } |
| 38 | |
| 39 | // Hash function for a byte array. |
| 40 | // May change from time to time, may differ on different platforms, may differ |
| 41 | // depending on NDEBUG. |
| 42 | size_t Hash(const char* s, size_t len) { |
| 43 | return sizeof(size_t) == 8 ? Hash64(s, len) : Hash32(s, len); |
| 44 | } |
| 45 | |
| 46 | // Hash function for a byte array. For convenience, a 64-bit seed is also |
| 47 | // hashed into the result. |
| 48 | // May change from time to time, may differ on different platforms, may differ |
| 49 | // depending on NDEBUG. |
| 50 | uint64_t Hash64WithSeed(const char* s, size_t len, uint64_t seed) { |
| 51 | return DebugTweak(farmhashna::Hash64WithSeed(s, len, seed)); |
| 52 | } |
| 53 | |
| 54 | // Hash function for a byte array. For convenience, two seeds are also |
| 55 | // hashed into the result. |
| 56 | // May change from time to time, may differ on different platforms, may differ |
| 57 | // depending on NDEBUG. |
| 58 | uint64_t Hash64WithSeeds(const char* s, size_t len, uint64_t seed0, uint64_t seed1) { |
| 59 | return DebugTweak(farmhashna::Hash64WithSeeds(s, len, seed0, seed1)); |
| 60 | } |
| 61 | |
| 62 | // Hash function for a byte array. |
| 63 | // May change from time to time, may differ on different platforms, may differ |
| 64 | // depending on NDEBUG. |
| 65 | NAMESPACE_FOR_HASH_FUNCTIONS::uint128_t Hash128(const char* s, size_t len) { |
| 66 | return DebugTweak(farmhashcc::Fingerprint128(s, len)); |
| 67 | } |
| 68 | |
| 69 | // Hash function for a byte array. For convenience, a 128-bit seed is also |
| 70 | // hashed into the result. |
| 71 | // May change from time to time, may differ on different platforms, may differ |
| 72 | // depending on NDEBUG. |
| 73 | NAMESPACE_FOR_HASH_FUNCTIONS::uint128_t Hash128WithSeed(const char* s, size_t len, NAMESPACE_FOR_HASH_FUNCTIONS::uint128_t seed) { |
| 74 | return DebugTweak(farmhashcc::CityHash128WithSeed(s, len, seed)); |
| 75 | } |
| 76 | |
| 77 | // BASIC NON-STRING HASHING |
| 78 | |
| 79 | // FINGERPRINTING (i.e., good, portable, forever-fixed hash functions) |
| 80 | |
| 81 | // Fingerprint function for a byte array. Most useful in 32-bit binaries. |
| 82 | uint32_t Fingerprint32(const char* s, size_t len) { |
| 83 | return farmhashmk::Hash32(s, len); |
| 84 | } |
| 85 | |
| 86 | // Fingerprint function for a byte array. |
| 87 | uint64_t Fingerprint64(const char* s, size_t len) { |
| 88 | return farmhashna::Hash64(s, len); |
| 89 | } |
| 90 | |
| 91 | // Fingerprint function for a byte array. |
| 92 | NAMESPACE_FOR_HASH_FUNCTIONS::uint128_t Fingerprint128(const char* s, size_t len) { |
| 93 | return farmhashcc::Fingerprint128(s, len); |
| 94 | } |
| 95 | |
| 96 | // Older and still available but perhaps not as fast as the above: |
| 97 | // farmhashns::Hash32{,WithSeed}() |
| 98 | |
| 99 | } // namespace NAMESPACE_FOR_HASH_FUNCTIONS |
| 100 | |