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d5fea1b235
This allows u64s to be used in HashMaps.
26 lines
495 B
C
26 lines
495 B
C
#pragma once
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#include "Types.h"
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inline unsigned int_hash(u32 key)
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{
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key += ~(key << 15);
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key ^= (key >> 10);
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key += (key << 3);
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key ^= (key >> 6);
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key += ~(key << 11);
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key ^= (key >> 16);
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return key;
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}
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inline unsigned pair_int_hash(u32 key1, u32 key2)
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{
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return int_hash((int_hash(key1) * 209) ^ (int_hash(key2 * 413)));
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}
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inline unsigned u64_hash(u64 key)
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{
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u32 first = key & 0xFFFFFFFF;
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u32 last = key >> 32;
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return pair_int_hash(first, last);
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}
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