boost/charconv
2
0
Fork 0
mirror of https://github.com/boostorg/charconv.git synced 2026-02-09 23:12:24 +00:00
Code Issues Projects Releases Wiki Activity

Change x86 intrinsic to work with 32bit environment

Browse Source
This commit is contained in:
Matt Borland
2023-02-21 10:33:06 -08:00
parent 861bcf7f62
commit 57919cea20
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/boost/charconv/detail/leading_zeros.hpp
View File

@@ -76,7 +76,7 @@ inline int leading_zeros(std::uint64_t val) noexcept
return static_cast<int>(63 - leading_zero);
}
#elif defined(BOOST_CHARCONV_HAS_X86_INTRINSICS)
return static_cast<int>(_lzcnt_u64(val);)
return static_cast<int>(__builtin_clzll(val));
#elif defined(BOOST_CHARCONV_HAS_ARM_INTRINSICS)
// CLZ Xd, Xm
return __builtin_clzll(val);