libstdc++-v3/testsuite/26_numerics/complex/dr844.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // 2008-06-12  Paolo Carlini  <paolo.carlini@oracle.com>
   3 //
   4 // Copyright (C) 2008, 2009 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 <testsuite_hooks.h>
  23 #include <testsuite_tr1.h>
  24
  25 // DR 844. complex pow return type is ambiguous.
  26 void test01()
  27 {
  28   bool test __attribute__((unused)) = true;
  29   using __gnu_test::check_ret_type;
  30
  31   typedef std::complex<float>       cmplx_f_type;
  32   typedef std::complex<double>      cmplx_d_type;
  33   typedef std::complex<long double> cmplx_ld_type;
  34
  35   const int          i1 = 1;
  36   const float        f1 = 1.0f;
  37   const double       d1 = 1.0;
  38   const long double ld1 = 1.0l;
  39
  40   check_ret_type<cmplx_d_type>(std::pow(cmplx_f_type(f1, f1), i1));
  41   VERIFY( std::pow(cmplx_f_type(f1, f1), i1)
  42           == std::pow(cmplx_d_type(f1, f1), double(i1)) );
  43   check_ret_type<cmplx_d_type>(std::pow(cmplx_d_type(d1, d1), i1));
  44   check_ret_type<cmplx_ld_type>(std::pow(cmplx_ld_type(ld1, ld1), i1));
  45 }
  46
  47 int main()
  48 {
  49   test01();
  50   return 0;
  51 }