[multiple changes]
2011-02-28 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/20_util/ratio/comparisons/comp3.cc: New. 2011-02-28 Marc Glisse <marc.glisse@normalesup.org> PR libstdc++/42622 * include/std/ratio (ratio_less): Reimplement to never overflow. * testsuite/20_util/ratio/comparisons/comp2.cc: Extend. From-SVN: r170567
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Paolo Carlini
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f61c6f34a3
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d154f92719
4 changed files with 128 additions and 6 deletions
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@ -1,3 +1,13 @@
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2011-02-28 Paolo Carlini <paolo.carlini@oracle.com>
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* testsuite/20_util/ratio/comparisons/comp3.cc: New.
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2011-02-28 Marc Glisse <marc.glisse@normalesup.org>
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PR libstdc++/42622
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* include/std/ratio (ratio_less): Reimplement to never overflow.
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* testsuite/20_util/ratio/comparisons/comp2.cc: Extend.
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2011-02-24 Benjamin Kosnik <bkoz@redhat.com>
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* testsuite/18_support/type_info/fundamental.cc: New.
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@ -1,6 +1,6 @@
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// ratio -*- C++ -*-
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// Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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// Copyright (C) 2008, 2009, 2010, 2011 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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@ -274,9 +274,42 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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: integral_constant<bool, !ratio_equal<_R1, _R2>::value>
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{ };
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template<typename _R1>
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// 0 <= _Ri < 1
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template<typename _R1, typename _R2>
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struct __ratio_less_impl_2;
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// _Ri > 0
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template<typename _R1, typename _R2, intmax_t __q1 = _R1::num / _R1::den,
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intmax_t __q2 = _R2::num / _R2::den, bool __eq = (__q1 == __q2)>
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struct __ratio_less_impl_1
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: integral_constant<bool, _R1::num < _R1::den>
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: __ratio_less_impl_2<ratio<_R1::num % _R1::den, _R1::den>,
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ratio<_R2::num % _R2::den, _R2::den> >::type
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{ };
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template<typename _R1, typename _R2, intmax_t __q1, intmax_t __q2>
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struct __ratio_less_impl_1<_R1, _R2, __q1, __q2, false>
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: integral_constant<bool, (__q1 < __q2) >
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{ };
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template<typename _R1, typename _R2>
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struct __ratio_less_impl_2
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: __ratio_less_impl_1<ratio<_R2::den, _R2::num>,
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ratio<_R1::den, _R1::num> >::type
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{ };
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template<intmax_t __d1, typename _R2>
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struct __ratio_less_impl_2<ratio<0, __d1>, _R2>
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: integral_constant<bool, true>
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{ };
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template<typename _R1, intmax_t __d2>
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struct __ratio_less_impl_2<_R1, ratio<0, __d2> >
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: integral_constant<bool, false>
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{ };
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template<intmax_t __d1, intmax_t __d2>
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struct __ratio_less_impl_2<ratio<0, __d1>, ratio<0, __d2> >
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: integral_constant<bool, false>
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{ };
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template<typename _R1, typename _R2,
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@ -286,7 +319,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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bool = (__static_sign<_R1::num>::value == -1
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&& __static_sign<_R2::num>::value == -1)>
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struct __ratio_less_impl
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: __ratio_less_impl_1<typename ratio_divide<_R1, _R2>::type>::type
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: __ratio_less_impl_1<_R1, _R2>::type
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{ };
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template<typename _R1, typename _R2>
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@ -296,7 +329,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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template<typename _R1, typename _R2>
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struct __ratio_less_impl<_R1, _R2, false, true>
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: __ratio_less_impl_1<typename ratio_divide<_R2, _R1>::type>::type
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: __ratio_less_impl_1<ratio<-_R2::num, _R2::den>,
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ratio<-_R1::num, _R1::den> >::type
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{ };
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/// ratio_less
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@ -1,7 +1,7 @@
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// { dg-options "-std=gnu++0x" }
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// { dg-require-cstdint "" }
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// Copyright (C) 2008, 2009, 2010 Free Software Foundation
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// Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation
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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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@ -48,6 +48,9 @@ test01()
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VERIFY( (std::ratio_less<std::ratio<-M, M - 1>,
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std::ratio<-M, M - 2>>::value == 0) );
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VERIFY( (std::ratio_less<std::ratio<M - 2, M - 1>,
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std::ratio<M - 1, M>>::value == 1) );
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}
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int main()
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75
libstdc++-v3/testsuite/20_util/ratio/comparisons/comp3.cc
Normal file
75
libstdc++-v3/testsuite/20_util/ratio/comparisons/comp3.cc
Normal file
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@ -0,0 +1,75 @@
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// { dg-options "-std=gnu++0x" }
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// { dg-require-cstdint "" }
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// 2011-02-28 Paolo Carlini <paolo.carlini@oracle.com>
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// Copyright (C) 2011 Free Software Foundation
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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 <testsuite_hooks.h>
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void
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test01()
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{
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bool test __attribute__((unused)) = true;
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VERIFY( (std::ratio_less<std::ratio<59, 29131>,
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std::ratio<59, 29129>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<4733, 13>,
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std::ratio<4751, 13>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<25703, 25717>,
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std::ratio<25733, 25741>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<631, 769>,
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std::ratio<673, 773>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<8353, 16903>,
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std::ratio<17891, 32099>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<2311, 18701>,
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std::ratio<18457, 19571>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<60, 29132>,
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std::ratio<60, 29130>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<4734, 14>,
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std::ratio<4752, 14>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<25704, 25718>,
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std::ratio<25732, 25742>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<632, 770>,
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std::ratio<674, 774>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<8352, 16904>,
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std::ratio<17892, 32100>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<2312, 18702>,
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std::ratio<18458, 19572>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<58, 29130>,
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std::ratio<58, 29128>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<4732, 12>,
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std::ratio<4750, 12>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<25702, 25716>,
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std::ratio<25734, 25740>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<630, 768>,
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std::ratio<672, 772>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<8354, 16902>,
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std::ratio<17890, 32102>>::value == 1) );
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VERIFY( (std::ratio_less<std::ratio<2310, 18700>,
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std::ratio<18456, 19570>>::value == 1) );
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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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