101 lines
2.3 KiB
C++
101 lines
2.3 KiB
C++
// Copyright (C) 2005-2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// 25.3.4 [lib.alg.merge]
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#include <algorithm>
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#include <testsuite_hooks.h>
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#include <testsuite_iterators.h>
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using __gnu_test::test_container;
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using __gnu_test::input_iterator_wrapper;
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using __gnu_test::output_iterator_wrapper;
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using std::merge;
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typedef test_container<int, input_iterator_wrapper> Icontainer;
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typedef test_container<int, output_iterator_wrapper> Ocontainer;
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void
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test1()
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{
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int array1[1], array2[1];
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Icontainer con1(array1, array1);
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Icontainer con2(array1, array1);
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Ocontainer con3(array2, array2);
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VERIFY(merge(con1.begin(), con1.end(), con2.begin(), con2.end(),
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con3.begin()).ptr == array2);
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}
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void
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test2()
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{
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int array1[]={0,1,4};
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int array2[]={2,3};
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int array3[5];
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Icontainer con1(array1, array1 + 3);
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Icontainer con2(array2, array2 + 2);
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Ocontainer con3(array3, array3 + 5);
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VERIFY(merge(con1.begin(), con1.end(), con2.begin(), con2.end(),
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con3.begin()).ptr == array3 + 5);
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VERIFY(array3[0] == 0 && array3[1] == 1 && array3[2] == 2 &&
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array3[3] == 3 && array3[4] == 4);
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}
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struct S
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{
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int i;
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int j;
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S() {}
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S(int in)
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{
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if(in > 0)
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{
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i = in;
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j = 1;
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}
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else
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{
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i = -in;
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j = 0;
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}
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}
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};
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bool
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operator<(const S& s1, const S& s2)
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{ return s1.i < s2.i; }
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void
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test3()
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{
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S array1[] = { -1 , -3};
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S array2[] = { 1, 2, 3};
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S array3[5];
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merge(array1, array1 + 2, array2, array2 + 3, array3);
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VERIFY(array3[0].j == 0 && array3[1].j == 1 && array3[2].j == 1 &&
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array3[3].j == 0 && array3[4].j == 1);
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}
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int
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main()
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{
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test1();
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test2();
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test3();
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}
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