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Replace utils::cnttz{32,64} with std::countr_{zero,one}

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Make #include <bit> mandatory.
This commit is contained in:
Nekotekina 2020-04-13 15:31:41 +03:00
parent adfc9d93c3
commit d0c199d455
10 changed files with 15 additions and 37 deletions
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24
Utilities/asm.h
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@ -28,30 +28,6 @@ namespace utils
#endif
}
inline u32 cnttz32(u32 arg, bool nonzero = false)
{
#ifdef _MSC_VER
ulong res;
return _BitScanForward(&res, arg) || nonzero ? res : 32;
#elif __BMI__
return _tzcnt_u32(arg);
#else
return arg || nonzero ? __builtin_ctz(arg) : 32;
#endif
}
inline u64 cnttz64(u64 arg, bool nonzero = false)
{
#ifdef _MSC_VER
ulong res;
return _BitScanForward64(&res, arg) || nonzero ? res : 64;
#elif __BMI__
return _tzcnt_u64(arg);
#else
return arg || nonzero ? __builtin_ctzll(arg) : 64;
#endif
}
inline u8 popcnt32(u32 arg)
{
#ifdef _MSC_VER