libstdc++-v3/testsuite/25_algorithms/equal_range/1.cc

   1 // Copyright (C) 2005-2025 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 // 25.3.3.3 [lib.equal.range]
  19
  20 #include <algorithm>
  21 #include <utility>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_iterators.h>
  24
  25 using __gnu_test::test_container;
  26 using __gnu_test::forward_iterator_wrapper;
  27 using std::equal_range;
  28
  29 typedef test_container<int, forward_iterator_wrapper> Container;
  30 int array[] = {0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2};
  31
  32 void
  33 test1()
  34 {
  35   for(int i = 0; i < 6; ++i)
  36     for(int j = 6; j < 12; ++j)
  37       {
  38         Container con(array + i, array + j);
  39         VERIFY(equal_range(con.begin(), con.end(), 1).first.ptr ==
  40                array + std::max(i, 4));
  41         VERIFY(equal_range(con.begin(), con.end(), 1).second.ptr ==
  42                array + std::min(j, 8));
  43       }
  44 }
  45
  46 void
  47 test2()
  48 {
  49   int array[]={0, 0, 2, 2, 2};
  50   Container con(array, array + 5);
  51   VERIFY(equal_range(con.begin(), con.end(), 1).first.ptr ==
  52          array + 2);
  53   VERIFY(equal_range(con.begin(), con.end(), 1).second.ptr ==
  54          array + 2);
  55 }
  56
  57 int
  58 main()
  59 {
  60   test1();
  61   test2();
  62 }