libstdc++-v3/testsuite/26_numerics/complex/value_operations/more_constexpr.cc

   1 // { dg-do compile { target c++20 } }
   2
   3 // Copyright (C) 2018-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <complex>
  21 #include <testsuite_common_types.h>
  22
  23 namespace __gnu_test
  24 {
  25   struct constexpr_functions
  26   {
  27     template<typename _Ttesttype>
  28       void
  29       operator()()
  30       {
  31         struct _Concept
  32         {
  33           void __constraint()
  34           {
  35             typedef typename _Ttesttype::_ComplexT _ComplexT;
  36             constexpr _ComplexT cc = { 1.1 };
  37             constexpr _Ttesttype a(cc);
  38             constexpr auto v1 [[maybe_unused]] = norm(a);
  39             constexpr auto v2 [[maybe_unused]] = conj(a);
  40           }
  41         };
  42
  43         _Concept c;
  44         c.__constraint();
  45       }
  46   };
  47 }
  48
  49 int main()
  50 {
  51   __gnu_test::constexpr_functions test;
  52
  53   test.operator()<std::complex<float>>();
  54   test.operator()<std::complex<double>>();
  55   test.operator()<std::complex<long double>>();
  56
  57   return 0;
  58 }