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fix: reflect64

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This commit is contained in:
douniwan5788
2024-09-17 23:22:37 +08:00
parent d46b074fbc
commit f4b01f69a6
1 changed files with 3 additions and 3 deletions
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common/commonutil.c
+3 -3
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@@ -146,11 +146,11 @@ uint32_t reflect32(uint32_t b) {
uint64_t reflect64(uint64_t b) {
// https://graphics.stanford.edu/~seander/bithacks.html#BitReverseTable
uint64_t v = b; // 32-bit word to reverse bit order
// swap 2-byte long pairs
uint64_t v = b; // 64-bit word to reverse bit order
// swap 4-byte long pairs
uint64_t v1 = reflect32(v >> 32);
uint64_t v2 = reflect32(v);
v = (v1 << 32) | (v2 & 0xFFFFFFFF);
v = (v2 << 32) | (v1 & 0xFFFFFFFF);
return v;
}