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// Copyright (C) 2005-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 25.3.5.3 [lib.set.difference]
#include <algorithm>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
using __gnu_test::test_container;
using __gnu_test::input_iterator_wrapper;
using __gnu_test::output_iterator_wrapper;
using std::set_difference;
typedef test_container<int, input_iterator_wrapper> Icontainer;
typedef test_container<int, output_iterator_wrapper> Ocontainer;
void
test1()
{
int array1[1], array2[1];
Icontainer con1(array1, array1);
Icontainer con2(array1, array1);
Ocontainer con3(array2, array2);
VERIFY(set_difference(con1.begin(), con1.end(), con2.begin(), con2.end(),
con3.begin()).ptr == array2);
}
void
test2()
{
int array1[] = {1};
int array2[] = {0};
Icontainer con1(array1, array1);
Icontainer con2(array1, array1 + 1);
Ocontainer con3(array2, array2);
VERIFY(set_difference(con1.begin(), con1.end(), con2.begin(), con2.end(),
con3.begin()).ptr == array2);
}
void
test3()
{
int array1[] = {1};
int array2[] = {0};
Icontainer con1(array1, array1 + 1);
Icontainer con2(array1, array1);
Ocontainer con3(array2, array2 + 1);
VERIFY(set_difference(con1.begin(), con1.end(), con2.begin(), con2.end(),
con3.begin()).ptr == array2 + 1);
}
void
test4()
{
int array1[]={0,1,1,2,4};
int array2[]={1,2,3};
int array3[6];
Icontainer con1(array1, array1 + 5);
Icontainer con2(array2, array2 + 3);
Ocontainer con3(array3, array3 + 3);
VERIFY(set_difference(con1.begin(), con1.end(), con2.begin(), con2.end(),
con3.begin()).ptr == array3 + 3);
VERIFY(array3[0] == 0 && array3[1] == 1 && array3[2] == 4);
}
struct S
{
int i;
int j;
S() {}
S(int in)
{
if(in > 0)
{
i = in;
j = 1;
}
else
{
i = -in;
j = 0;
}
}
};
bool
operator<(const S& s1, const S& s2)
{ return s1.i < s2.i; }
typedef test_container<S, input_iterator_wrapper> SIcontainer;
typedef test_container<S, output_iterator_wrapper> SOcontainer;
void
test5()
{
S array1[] = { -1, -1, -1, -2, -2, -3, -4};
S array2[] = { 1, 1, 1, 1, 2, 4, 4};
S array3[9];
SIcontainer con1(array1, array1 + 7);
SIcontainer con2(array2, array2 + 7);
SOcontainer con3(array3, array3 + 2);
VERIFY(set_difference(con1.begin(), con1.end(), con2.begin(), con2.end(),
con3.begin()).ptr == array3 + 2);
for(int i = 0; i < 2; ++i)
VERIFY(array3[i].j == 0);
}
int main()
{
test1();
test2();
test3();
test4();
test5();
}