libstdc++-v3/testsuite/26_numerics/complex/cons/48760_c++0x.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-c-std "" }
   3
   4 // Copyright (C) 2011-2021 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <complex>
  22 #include <limits>
  23 #include <testsuite_hooks.h>
  24
  25 template<typename T>
  26   void do_test01()
  27   {
  28     if (std::numeric_limits<T>::has_quiet_NaN)
  29       {
  30         std::complex<T> c1(T(0), std::numeric_limits<T>::quiet_NaN());
  31         VERIFY( c1.real() == T(0) );
  32         VERIFY( std::isnan(c1.imag()) );
  33
  34         std::complex<T> c2(std::numeric_limits<T>::quiet_NaN(), T(0));
  35         VERIFY( std::isnan(c2.real()) );
  36         VERIFY( c2.imag() == T(0) );
  37
  38         std::complex<T> c3(std::numeric_limits<T>::quiet_NaN(),
  39                            std::numeric_limits<T>::quiet_NaN());
  40         VERIFY( std::isnan(c3.real()) );
  41         VERIFY( std::isnan(c3.imag()) );
  42       }
  43   }
  44
  45 // libstdc++/48760
  46 void test01()
  47 {
  48   do_test01<float>();
  49   do_test01<double>();
  50   do_test01<long double>();
  51 }
  52
  53 int main()
  54 {
  55   test01();
  56   return 0;
  57 }