libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/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 // 25.3.5.5 [lib.set.symmetric.difference]
  19
  20 #include <algorithm>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_iterators.h>
  23
  24 using __gnu_test::test_container;
  25 using __gnu_test::input_iterator_wrapper;
  26 using __gnu_test::output_iterator_wrapper;
  27 using std::set_symmetric_difference;
  28
  29 typedef test_container<int, input_iterator_wrapper> Icontainer;
  30 typedef test_container<int, output_iterator_wrapper> Ocontainer;
  31
  32 void
  33 test1()
  34 {
  35   int array1[1], array2[1];
  36   Icontainer con1(array1, array1);
  37   Icontainer con2(array1, array1);
  38   Ocontainer con3(array2, array2);
  39   VERIFY(set_symmetric_difference(con1.begin(), con1.end(), con2.begin(),
  40                                   con2.end(), con3.begin()).ptr == array2);
  41 }
  42
  43 void
  44 test2()
  45 {
  46   int array1[] = {1};
  47   int array2[] = {0};
  48   Icontainer con1(array1, array1);
  49   Icontainer con2(array1, array1 + 1);
  50   Ocontainer con3(array2, array2 + 1);
  51   VERIFY(set_symmetric_difference(con1.begin(), con1.end(), con2.begin(),
  52                                   con2.end(), con3.begin()).ptr == array2 + 1);
  53 }
  54
  55 void
  56 test3()
  57 {
  58   int array1[] = {1};
  59   int array2[] = {0};
  60   Icontainer con1(array1, array1 + 1);
  61   Icontainer con2(array1, array1);
  62   Ocontainer con3(array2, array2 + 1);
  63   VERIFY(set_symmetric_difference(con1.begin(), con1.end(), con2.begin(),
  64                                   con2.end(), con3.begin()).ptr == array2 + 1);
  65 }
  66
  67 void
  68 test4()
  69 {
  70   int array1[]={0,1,1,2,4};
  71   int array2[]={1,2,2,3};
  72   int array3[5];
  73   Icontainer con1(array1, array1 + 5);
  74   Icontainer con2(array2, array2 + 4);
  75   Ocontainer con3(array3, array3 + 5);
  76   VERIFY(set_symmetric_difference(con1.begin(), con1.end(), con2.begin(),
  77                                   con2.end(), con3.begin()).ptr == array3 + 5);
  78   VERIFY(array3[0] == 0 && array3[1] == 1 && array3[2] == 2 &&
  79          array3[3] == 3 && array3[4] == 4);
  80 }
  81
  82 struct S
  83 {
  84   int i;
  85   int j;
  86   S() {}
  87   S(int in)
  88   {
  89     if(in > 0)
  90     {
  91       i = in;
  92       j = 1;
  93     }
  94     else
  95     {
  96       i = -in;
  97       j = 0;
  98     }
  99   }
 100 };
 101
 102 bool
 103 operator<(const S& s1, const S& s2)
 104 { return s1.i < s2.i; }
 105
 106 typedef test_container<S, input_iterator_wrapper> SIcontainer;
 107 typedef test_container<S, output_iterator_wrapper> SOcontainer;
 108
 109 void
 110 test5()
 111 {
 112   S array1[] = { -1, -1, -2, -2, -4, -5};
 113   S array2[] = { 1, 1, 1, 2, 3, 4};
 114   S array3[4];
 115   SIcontainer con1(array1, array1 + 6);
 116   SIcontainer con2(array2, array2 + 6);
 117   SOcontainer con3(array3, array3 + 4);
 118   VERIFY(set_symmetric_difference(con1.begin(), con1.end(), con2.begin(),
 119                                   con2.end(), con3.begin()).ptr == array3 + 4);
 120   VERIFY(array3[0].j == 1 && array3[1].j == 0 && array3[2].j == 1 &&
 121          array3[3].j == 0);
 122 }
 123
 124 int
 125 main()
 126 {
 127   test1();
 128   test2();
 129   test3();
 130   test4();
 131   test5();
 132 }
 133