- emulation版のMSB32/64 で-1をし忘れていた (#273)

yaneurao · Apr 5, 2024 · 93edf88 · 93edf88
1 parent 20009c8
commit 93edf88
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/source/extra/bitop.h b/source/extra/bitop.h
@@ -204,7 +204,7 @@ FORCE_INLINE s32 MSB32(u32 v) {
  v = v | (v >> 4);
  v = v | (v >> 8);
  v = v | (v >> 16);
- return POPCNT32(v);
+ return POPCNT32(v) - 1;
 }
 FORCE_INLINE s32 MSB64(u64 v) {
  ASSERT_LV3(v != 0);
@@ -214,7 +214,7 @@ FORCE_INLINE s32 MSB64(u64 v) {
  v = v | (v >> 8);
  v = v | (v >> 16);
  v = v | (v >> 32);
- return POPCNT64(v);
+ return POPCNT64(v) - 1;
 }
 
 #endif