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Pull in r345199 from upstream libc++ trunk (by Petr Hosek):

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Revert "Teach __libcpp_is_floating_point that __fp16 and _Float16 are
  floating-point types."

  This reverts commits r333103 and r333108. _Float16 and __fp16 are C11
  extensions and compilers other than Clang don't define these for C++.

  Differential Revision: https://reviews.llvm.org/D53670

This prevents "_Float16 is not supported on this target" errors in
libc++'s type_traits header, in some cases.

Reported by:	Charlie Li
MFC after:	3 days
This commit is contained in:
Dimitry Andric
2019-02-18 18:34:13 +00:00
parent 28ef0240e0
commit 993b827f31
1 changed files with 0 additions and 6 deletions
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contrib/libc++/include/type_traits
-6
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@@ -733,12 +733,6 @@ _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_integral_v
// is_floating_point // is_floating_point
template <class _Tp> struct __libcpp_is_floating_point : public false_type {}; template <class _Tp> struct __libcpp_is_floating_point : public false_type {};
#ifdef __clang__
template <> struct __libcpp_is_floating_point<__fp16> : public true_type {};
#endif
#ifdef __FLT16_MANT_DIG__
template <> struct __libcpp_is_floating_point<_Float16> : public true_type {};
#endif
template <> struct __libcpp_is_floating_point<float> : public true_type {}; template <> struct __libcpp_is_floating_point<float> : public true_type {};
template <> struct __libcpp_is_floating_point<double> : public true_type {}; template <> struct __libcpp_is_floating_point<double> : public true_type {};
template <> struct __libcpp_is_floating_point<long double> : public true_type {}; template <> struct __libcpp_is_floating_point<long double> : public true_type {};