coffee/fast_float
1
0
Fork 0
mirror of https://github.com/fastfloat/fast_float.git synced 2025-12-07 01:06:48 +08:00
Code Issues Packages Projects Releases Wiki Activity

explicit cast

Browse Source
This commit is contained in:
Daniel Lemire 2024-01-28 13:29:55 -05:00
parent 9da74ca5fb
commit eb584f748e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/fast_float/ascii_number.h
View File

@ -529,8 +529,8 @@ from_chars_result_t<UC> parse_int_string(UC const* p, UC const* pend, T& value,
// this weird workaround is required because: // this weird workaround is required because:
// - converting unsigned to signed when its value is greater than signed max is UB pre-C++23. // - converting unsigned to signed when its value is greater than signed max is UB pre-C++23.
// - reinterpret_casting (~i + 1) would work, but it is not constexpr // - reinterpret_casting (~i + 1) would work, but it is not constexpr
// this is always optimized into a neg instruction. // this is always optimized into a neg instruction (note: T is an integer type)
value = T(-std::numeric_limits<T>::max() - T(i - std::numeric_limits<T>::max())); value = T(-std::numeric_limits<T>::max() - T(i - uint64_t(std::numeric_limits<T>::max())));
#ifdef FASTFLOAT_VISUAL_STUDIO #ifdef FASTFLOAT_VISUAL_STUDIO
#pragma warning(pop) #pragma warning(pop)
#endif #endif