weaselab/conflict-set
2
0
Fork 0
Code Issues 4 Packages Releases 13 Activity

Unbotch x86 simd implementations

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

4
ConflictSet.cpp
View File

@@ -578,7 +578,7 @@ int firstNonNeg1(const int8_t x[16]) {
uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff; uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff;
if (bitfield == 0) if (bitfield == 0)
return -1; return -1;
return __builtin_clz(bitfield); return __builtin_ctz(bitfield);
} }
int lastNonNeg1(const int8_t x[16]) { 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; uint32_t bitfield = _mm_movemask_epi8(results) ^ 0xffff;
if (bitfield == 0) if (bitfield == 0)
return -1; return -1;
return 15 - __builtin_ctz(bitfield); return 31 - __builtin_clz(bitfield);
} }
#endif #endif