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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [include/] [ext/] [pb_ds/] [detail/] [eq_fn/] [eq_by_less.hpp] - Rev 516
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// -*- C++ -*- // Copyright (C) 2005, 2006, 2009 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. // Permission to use, copy, modify, sell, and distribute this software // is hereby granted without fee, provided that the above copyright // notice appears in all copies, and that both that copyright notice // and this permission notice appear in supporting documentation. None // of the above authors, nor IBM Haifa Research Laboratories, make any // representation about the suitability of this software for any // purpose. It is provided "as is" without express or implied // warranty. /** * @file eq_by_less.hpp * Contains an equivalence function. */ #ifndef PB_DS_EQ_BY_LESS_HPP #define PB_DS_EQ_BY_LESS_HPP #include <utility> #include <functional> #include <vector> #include <assert.h> #include <ext/pb_ds/detail/types_traits.hpp> namespace __gnu_pbds { namespace detail { template<typename Key, class Cmp_Fn> struct eq_by_less : private Cmp_Fn { bool operator()(const Key& r_lhs, const Key& r_rhs) const { const bool l = Cmp_Fn::operator()(r_lhs, r_rhs); const bool g = Cmp_Fn::operator()(r_rhs, r_lhs); return !(l || g); } }; } // namespace detail } // namespace __gnu_pbds #endif // #ifndef PB_DS_EQ_BY_LESS_HPP