libstdc++-v3/testsuite/std/concepts/concepts.lang/concept.arithmetic/floating_point.cc

   1 // Copyright (C) 2019-2022 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a } }
  20
  21 #include <concepts>
  22
  23 static_assert( std::floating_point<float> );
  24 static_assert( std::floating_point<double> );
  25 static_assert( std::floating_point<long double> );
  26 #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128)
  27 static_assert( std::floating_point<__float128> );
  28 #endif
  29
  30 static_assert( !std::floating_point<char> );
  31 static_assert( !std::floating_point<signed char> );
  32 static_assert( !std::floating_point<bool> );
  33 static_assert( !std::floating_point<int> );
  34 static_assert( !std::floating_point<char32_t> );
  35
  36 #ifdef __GLIBCXX_TYPE_INT_N_0
  37 static_assert( !std::floating_point<signed __GLIBCXX_TYPE_INT_N_0> );
  38 #endif
  39
  40 static_assert( !std::floating_point<void> );
  41 static_assert( !std::floating_point<float*> );
  42 static_assert( !std::floating_point<float&> );
  43 static_assert( !std::floating_point<float&&> );
  44 static_assert( !std::floating_point<const float&> );
  45 static_assert( !std::floating_point<float[]> );
  46 static_assert( !std::floating_point<float[2]> );
  47 static_assert( !std::floating_point<float()> );
  48 static_assert( !std::floating_point<float(*)()> );
  49 static_assert( !std::floating_point<float(&)()> );
  50
  51 enum E { };
  52 static_assert( !std::floating_point<E> );
  53 enum class CE { };
  54 static_assert( !std::floating_point<CE> );
  55 struct A { };
  56 static_assert( !std::floating_point<A> );
  57 union B { };
  58 static_assert( !std::floating_point<B> );