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🔥 conditional_cast

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Vladislav Nepogodin 2021-12-19 21:37:21 +04:00
parent f81cb9f365
commit f096c615c3
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2 changed files with 18 additions and 4 deletions
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14
include/spdlog/common.h
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@ -320,6 +320,20 @@ struct file_event_handlers
}; };
namespace details { namespace details {
// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
template<typename T, typename U, std::enable_if_t<!std::is_same<T, U>::value, int> = 0>
constexpr T conditional_static_cast(U value)
{
return static_cast<T>(value);
}
template<typename T, typename U, std::enable_if_t<std::is_same<T, U>::value, int> = 0>
constexpr T conditional_static_cast(U value)
{
return value;
}
// make_unique support for pre c++14 // make_unique support for pre c++14
#if __cplusplus >= 201402L // C++14 and beyond #if __cplusplus >= 201402L // C++14 and beyond

4
include/spdlog/details/os-inl.h
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@ -405,9 +405,9 @@ SPDLOG_INLINE int pid() SPDLOG_NOEXCEPT
{ {
#ifdef _WIN32 #ifdef _WIN32
return static_cast<int>(::GetCurrentProcessId()); return conditional_static_cast<int>(::GetCurrentProcessId());
#else #else
return static_cast<int>(::getpid()); return conditional_static_cast<int>(::getpid());
#endif #endif
} }