weaselab/conflict-set
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Unbotch x86 simd implementations

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This commit is contained in:
Andrew Noyes
2024-01-23 16:46:52 -08:00
parent c775fccf6f
commit 3cb99ad441
1 changed files with 2 additions and 2 deletions
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4
ConflictSet.cpp
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@@ -578,7 +578,7 @@ int firstNonNeg1(const int8_t x[16]) {
uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff;
if (bitfield == 0)
return -1;
return __builtin_clz(bitfield);
return __builtin_ctz(bitfield);
}
int lastNonNeg1(const int8_t x[16]) {
@@ -589,7 +589,7 @@ int lastNonNeg1(const int8_t x[16]) {
uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff;
if (bitfield == 0)
return -1;
return 15 - __builtin_ctz(bitfield);
return 31 - __builtin_clz(bitfield);
}
#endif