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Revert "Teach __libcpp_is_floating_point that __fp16 and _Float16 are" 

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

llvm-svn: 345199
This commit is contained in:
Petr Hosek 2018-10-24 21:29:15 +00:00
parent 632f35d495
commit 76ccec07b4
2 changed files with 0 additions and 30 deletions
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6
libcxx/include/type_traits
View File

@ -738,12 +738,6 @@ _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_integral_v
// is_floating_point
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<double> : public true_type {};
template <> struct __libcpp_is_floating_point<long double> : public true_type {};

24
libcxx/test/libcxx/type_traits/is_floating_point.pass.cpp
View File

@ -1,24 +0,0 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// <type_traits>
//
// Test that is_floating_point<T>::value is true when T=__fp16 or T=_Float16.
#include <type_traits>
int main() {
#ifdef __clang__
static_assert(std::is_floating_point<__fp16>::value, "");
#endif
#ifdef __FLT16_MANT_DIG__
static_assert(std::is_floating_point<_Float16>::value, "");
#endif
return 0;
}