mirror of git://gcc.gnu.org/git/gcc.git
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
// { dg-do run { target c++11 } }
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// Copyright (C) 2011-2018 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
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// along with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <ratio>
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#include <limits>
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#include <testsuite_hooks.h>
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// libstdc++/47913
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void test01()
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{
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using namespace std;
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const intmax_t m1 = (intmax_t)1 << (4 * sizeof(intmax_t) - 1);
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typedef ratio_add<ratio<1, (m1 - 1) * (m1 - 2)>,
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ratio<1, (m1 - 3) * (m1 - 2)> > ra_type1;
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VERIFY( ra_type1::num == 2 );
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VERIFY( ra_type1::den == (m1 - 1) * (m1 - 3) );
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const intmax_t m2 = numeric_limits<intmax_t>::max();
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typedef ratio_add<ratio<m2, 2>,
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ratio<-m2, 3> > ra_type2;
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VERIFY( ra_type2::num == m2 );
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VERIFY( ra_type2::den == 6 );
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typedef ratio_add<ratio<m2 / 7 * 5 - 1, 5>,
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ratio<-m2 + 2, 7> > ra_type3;
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ra_type3();
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const intmax_t m3 = numeric_limits<intmax_t>::max() - 1;
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typedef ratio_add<ratio<-m3 / 7 * 5 - 1, 5>,
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ratio<m3, 7> > ra_type4;
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ra_type4();
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const intmax_t m4 = numeric_limits<intmax_t>::max() / 2;
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typedef ratio_add<ratio<m4 - 5, 15>,
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ratio<m4, 35> > ra_type5;
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VERIFY( ra_type5::num == (2 * m4 - 7) );
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VERIFY( ra_type5::den == 21 );
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}
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int main()
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{
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test01();
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return 0;
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}
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