libstdc++-v3/testsuite/26_numerics/complex/cons/constexpr_primary.cc

   1 // { dg-do compile }
   2 // { dg-options "-std=gnu++11" }
   3
   4 // Copyright (C) 2010-2015 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
  23 // User defined type, so that the primary std::complex template is used.
  24 namespace numext
  25 {
  26   struct ldld_base
  27   {
  28     long double one;
  29     long double two;
  30   };
  31
  32   struct ldld_lit : public ldld_base
  33   { };
  34
  35   struct ldld_nonlit : public ldld_base
  36   {
  37     ~ldld_nonlit() { }
  38   };
  39
  40   bool
  41   operator<(const ldld_base __a, const ldld_base __b)
  42   { return __a.one < __b.one && __a.two < __b.two; }
  43
  44   bool
  45   operator==(const ldld_base __a, const ldld_base __b)
  46   { return __a.one == __b.one && __a.two == __b.two; }
  47
  48   ldld_base
  49   operator+=(const ldld_base __a, const ldld_base __b)
  50   { return ldld_base({ __a.one + __b.one, __a.two + __b.two}); }
  51
  52   ldld_base
  53   operator-=(const ldld_base __a, const ldld_base __b)
  54   { return ldld_base({ __a.one - __b.one, __a.two - __b.two}); }
  55
  56   ldld_base
  57   operator*=(const ldld_base __a, const ldld_base __b)
  58   { return ldld_base({ __a.one * __b.one, __a.two * __b.two}); }
  59
  60   ldld_base
  61   operator/=(const ldld_base __a, const ldld_base __b)
  62   { return ldld_base({ __a.one / __b.one, __a.two / __b.two}); }
  63
  64 }
  65
  66 constexpr std::complex<numext::ldld_lit> lit; // ok
  67 // constexpr std::complex<numext::ldld_nonlit> nonlit; // error