46 lines
2.1 KiB
C
46 lines
2.1 KiB
C
#if !defined(DN_HASH_H)
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#define DN_HASH_H
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/*
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// $$\ $$\ $$$$$$\ $$$$$$\ $$\ $$\
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// $$ | $$ |$$ __$$\ $$ __$$\ $$ | $$ |
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// $$ | $$ |$$ / $$ |$$ / \__|$$ | $$ |
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// $$$$$$$$ |$$$$$$$$ |\$$$$$$\ $$$$$$$$ |
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// $$ __$$ |$$ __$$ | \____$$\ $$ __$$ |
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// $$ | $$ |$$ | $$ |$$\ $$ |$$ | $$ |
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// $$ | $$ |$$ | $$ |\$$$$$$ |$$ | $$ |
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// \__| \__|\__| \__| \______/ \__| \__|
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//
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// dn_hash.h -- Hashing functions
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//
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////////////////////////////////////////////////////////////////////////////////////////////////////
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*/
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// NOTE: DN_FNV1A //////////////////////////////////////////////////////////////////////////////////
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#if !defined(DN_FNV1A32_SEED)
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#define DN_FNV1A32_SEED 2166136261U
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#endif
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#if !defined(DN_FNV1A64_SEED)
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#define DN_FNV1A64_SEED 14695981039346656037ULL
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#endif
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// NOTE: DN_MurmurHash3 ////////////////////////////////////////////////////////////////////////////
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struct DN_MurmurHash3 { uint64_t e[2]; };
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// NOTE: DN_FNV1A //////////////////////////////////////////////////////////////////////////////////
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DN_API uint32_t DN_FNV1A32_Hash (void const *bytes, DN_USize size);
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DN_API uint64_t DN_FNV1A64_Hash (void const *bytes, DN_USize size);
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DN_API uint32_t DN_FNV1A32_Iterate (void const *bytes, DN_USize size, uint32_t hash);
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DN_API uint64_t DN_FNV1A64_Iterate (void const *bytes, DN_USize size, uint64_t hash);
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// NOTE: DN_MurmurHash3 ////////////////////////////////////////////////////////////////////////////
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DN_API uint32_t DN_MurmurHash3_x86U32 (void const *key, int len, uint32_t seed);
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DN_API DN_MurmurHash3 DN_MurmurHash3_x64U128 (void const *key, int len, uint32_t seed);
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#define DN_MurmurHash3_x64U128AsU64(key, len, seed) (DN_MurmurHash3_x64U128(key, len, seed).e[0])
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#define DN_MurmurHash3_x64U128AsU32(key, len, seed) (DN_CAST(uint32_t)DN_MurmurHash3_x64U128(key, len, seed).e[0])
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#endif // !defined(DN_HASH_H)
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