libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/check_type.cc

   1 // Copyright (C) 2005-2014 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 // 25.3.8 [lib.alg.lex.comparison]
  19
  20 // { dg-do compile }
  21
  22
  23 #include <algorithm>
  24 #include <testsuite_iterators.h>
  25
  26 using __gnu_test::input_iterator_wrapper;
  27
  28 struct Lhs1 { };
  29
  30 struct Rhs1 { };
  31
  32 bool
  33 operator<(const Lhs1&, const Rhs1&) {return true;}
  34
  35 bool
  36 operator<(const Rhs1&, const Lhs1&) {return false;}
  37
  38 struct X { };
  39
  40 bool
  41 predicate(const X&, const X&) {return true;}
  42
  43 bool
  44 test1(input_iterator_wrapper<Lhs1>& lhs1,
  45       input_iterator_wrapper<Rhs1>& rhs1)
  46 { return std::lexicographical_compare(lhs1, lhs1, rhs1, rhs1); }
  47
  48 bool
  49 test2(input_iterator_wrapper<X>& x)
  50 { return std::lexicographical_compare(x, x, x, x, predicate); }