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Remove redundant comments and put common case check first

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This commit is contained in:
Victor Zverovich
2021-05-07 17:14:29 -07:00
parent 2665afb515
commit 84feeb0f36
1 changed files with 5 additions and 15 deletions
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20
include/fmt/core.h
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@ -45,27 +45,17 @@
#endif #endif
// Check if constexpr std::char_traits<>::compare,length is supported. // Check if constexpr std::char_traits<>::compare,length is supported.
// #if defined(__GLIBCXX__)
// libstdc++: GCC 7 and newer and __cplusplus >= 201703L # if __cplusplus >= 201703L && defined(_GLIBCXX_RELEASE) && \
// MSVC : VS 2017 15.7 and newer and /std:c++17 _GLIBCXX_RELEASE >= 7 // GCC 7+ libstdc++ has _GLIBCXX_RELEASE.
// https://docs.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance
// https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros
// libc++ : 4.0 and newer and if __cplusplus >= 201703L
// https://libcxx.llvm.org/docs/Cxx1zStatus.html
//
// NOTE: FMT_GCC_VERSION - is not libstdc++ version.
// _GLIBCXX_RELEASE - is present in GCC 7 libstdc++ and newer.
#if defined(_MSC_VER)
# if _MSVC_LANG >= 201703L && _MSC_VER >= 1914
# define FMT_CONSTEXPR_CHAR_TRAITS constexpr # define FMT_CONSTEXPR_CHAR_TRAITS constexpr
# endif # endif
#elif defined(_LIBCPP_VERSION) #elif defined(_LIBCPP_VERSION)
# if __cplusplus >= 201703L && _LIBCPP_VERSION >= 4000 # if __cplusplus >= 201703L && _LIBCPP_VERSION >= 4000
# define FMT_CONSTEXPR_CHAR_TRAITS constexpr # define FMT_CONSTEXPR_CHAR_TRAITS constexpr
# endif # endif
#elif defined(__GLIBCXX__) #elif defined(_MSC_VER)
# if __cplusplus >= 201703L && defined(_GLIBCXX_RELEASE) && \ # if _MSVC_LANG >= 201703L && _MSC_VER >= 1914
_GLIBCXX_RELEASE >= 7
# define FMT_CONSTEXPR_CHAR_TRAITS constexpr # define FMT_CONSTEXPR_CHAR_TRAITS constexpr
# endif # endif
#endif #endif