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Update namedict.c

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This commit is contained in:
blueloveTH 2025-08-28 16:47:53 +08:00
parent 39106e272b
commit 7135e1ce59
1 changed files with 14 additions and 1 deletions
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15
src/objects/namedict.c
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@ -5,7 +5,20 @@
#include <string.h>
#include <assert.h>
#define HASH_KEY(__k) ((uintptr_t)(__k) >> 3U)
// https://jfdube.wordpress.com/2011/10/12/hashing-strings-and-pointers-avoiding-common-pitfalls/
uintptr_t ThomasWangInt32Hash(void* Ptr) {
// Here we think only the lower 32 bits are useful
uint32_t Value = (uint32_t)(uintptr_t)Ptr;
Value = ~Value + (Value << 15);
Value = Value ^ (Value >> 12);
Value = Value + (Value << 2);
Value = Value ^ (Value >> 4);
Value = Value * 2057;
Value = Value ^ (Value >> 16);
return Value;
}
#define HASH_KEY(__k) ThomasWangInt32Hash(__k)
#define HASH_PROBE_0(__k, ok, i) \
ok = false; \