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math: add type promoting template definition on MSVCRT

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When building with MSVCRT, we need to manually provide the type
promoting overloads to allow the correct type deduced invocation for
signbit(Int) and fpclassify(int).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@295559 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2017-02-18 19:28:38 +00:00
parent 524f109550
commit 1eab168286
1 changed files with 20 additions and 0 deletions
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20
include/math.h
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@@ -333,6 +333,16 @@ signbit(_A1 __lcpp_x) _NOEXCEPT
return __libcpp_signbit((typename std::__promote<_A1>::type)__lcpp_x);
}
#elif defined(_LIBCPP_MSVCRT) && ((_VC_CRT_MAJOR_VERSION-0) >= 14)
template <typename _A1>
inline _LIBCPP_INLINE_VISIBILITY
typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
signbit(_A1 __lcpp_x) _NOEXCEPT
{
return ::signbit(static_cast<typename std::__promote<_A1>::type>(__lcpp_x));
}
#endif // signbit
// fpclassify
@@ -357,6 +367,16 @@ fpclassify(_A1 __lcpp_x) _NOEXCEPT
return __libcpp_fpclassify((typename std::__promote<_A1>::type)__lcpp_x);
}
#elif defined(_LIBCPP_MSVCRT) && ((_VC_CRT_MAJOR_VERSION-0) >= 14)
template <typename _A1>
inline _LIBCPP_INLINE_VISIBILITY
typename std::enable_if<std::is_arithmetic<_A1>::value, int>::type
fpclassify(_A1 __lcpp_x) _NOEXCEPT
{
return ::fpclassify(static_cast<typename std::__promote<_A1>::type>(__lcpp_x));
}
#endif // fpclassify
// isfinite