1*f8a1b7d9SAlexander Kabaev // Internal header for TR1 complex -*- C++ -*- 2*f8a1b7d9SAlexander Kabaev 3*f8a1b7d9SAlexander Kabaev // Copyright (C) 2006 Free Software Foundation, Inc. 4*f8a1b7d9SAlexander Kabaev // 5*f8a1b7d9SAlexander Kabaev // This file is part of the GNU ISO C++ Library. This library is free 6*f8a1b7d9SAlexander Kabaev // software; you can redistribute it and/or modify it under the 7*f8a1b7d9SAlexander Kabaev // terms of the GNU General Public License as published by the 8*f8a1b7d9SAlexander Kabaev // Free Software Foundation; either version 2, or (at your option) 9*f8a1b7d9SAlexander Kabaev // any later version. 10*f8a1b7d9SAlexander Kabaev 11*f8a1b7d9SAlexander Kabaev // This library is distributed in the hope that it will be useful, 12*f8a1b7d9SAlexander Kabaev // but WITHOUT ANY WARRANTY; without even the implied warranty of 13*f8a1b7d9SAlexander Kabaev // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*f8a1b7d9SAlexander Kabaev // GNU General Public License for more details. 15*f8a1b7d9SAlexander Kabaev 16*f8a1b7d9SAlexander Kabaev // You should have received a copy of the GNU General Public License along 17*f8a1b7d9SAlexander Kabaev // with this library; see the file COPYING. If not, write to the Free 18*f8a1b7d9SAlexander Kabaev // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19*f8a1b7d9SAlexander Kabaev // USA. 20*f8a1b7d9SAlexander Kabaev 21*f8a1b7d9SAlexander Kabaev // As a special exception, you may use this file as part of a free software 22*f8a1b7d9SAlexander Kabaev // library without restriction. Specifically, if other files instantiate 23*f8a1b7d9SAlexander Kabaev // templates or use macros or inline functions from this file, or you compile 24*f8a1b7d9SAlexander Kabaev // this file and link it with other files to produce an executable, this 25*f8a1b7d9SAlexander Kabaev // file does not by itself cause the resulting executable to be covered by 26*f8a1b7d9SAlexander Kabaev // the GNU General Public License. This exception does not however 27*f8a1b7d9SAlexander Kabaev // invalidate any other reasons why the executable file might be covered by 28*f8a1b7d9SAlexander Kabaev // the GNU General Public License. 29*f8a1b7d9SAlexander Kabaev 30*f8a1b7d9SAlexander Kabaev /** @file tr1/common.h 31*f8a1b7d9SAlexander Kabaev * This is a TR1 C++ Library header. 32*f8a1b7d9SAlexander Kabaev */ 33*f8a1b7d9SAlexander Kabaev 34*f8a1b7d9SAlexander Kabaev #ifndef _TR1_COMMON_H 35*f8a1b7d9SAlexander Kabaev #define _TR1_COMMON_H 1 36*f8a1b7d9SAlexander Kabaev 37*f8a1b7d9SAlexander Kabaev #include <tr1/type_traits> 38*f8a1b7d9SAlexander Kabaev 39*f8a1b7d9SAlexander Kabaev // namespace std::tr1 40*f8a1b7d9SAlexander Kabaev namespace std 41*f8a1b7d9SAlexander Kabaev { 42*f8a1b7d9SAlexander Kabaev _GLIBCXX_BEGIN_NAMESPACE(tr1) 43*f8a1b7d9SAlexander Kabaev 44*f8a1b7d9SAlexander Kabaev template<typename _Tp, bool = is_integral<_Tp>::value> 45*f8a1b7d9SAlexander Kabaev struct __promote 46*f8a1b7d9SAlexander Kabaev { typedef double __type; }; 47*f8a1b7d9SAlexander Kabaev 48*f8a1b7d9SAlexander Kabaev template<typename _Tp> 49*f8a1b7d9SAlexander Kabaev struct __promote<_Tp, false> 50*f8a1b7d9SAlexander Kabaev { typedef _Tp __type; }; 51*f8a1b7d9SAlexander Kabaev 52*f8a1b7d9SAlexander Kabaev template<typename _Tp, typename _Up> 53*f8a1b7d9SAlexander Kabaev struct __promote_2 54*f8a1b7d9SAlexander Kabaev { 55*f8a1b7d9SAlexander Kabaev private: 56*f8a1b7d9SAlexander Kabaev typedef typename __promote<_Tp>::__type __type1; 57*f8a1b7d9SAlexander Kabaev typedef typename __promote<_Up>::__type __type2; 58*f8a1b7d9SAlexander Kabaev 59*f8a1b7d9SAlexander Kabaev public: 60*f8a1b7d9SAlexander Kabaev typedef __typeof__(__type1() + __type2()) __type; 61*f8a1b7d9SAlexander Kabaev }; 62*f8a1b7d9SAlexander Kabaev 63*f8a1b7d9SAlexander Kabaev template<typename _Tp, typename _Up, typename _Vp> 64*f8a1b7d9SAlexander Kabaev struct __promote_3 65*f8a1b7d9SAlexander Kabaev { 66*f8a1b7d9SAlexander Kabaev private: 67*f8a1b7d9SAlexander Kabaev typedef typename __promote<_Tp>::__type __type1; 68*f8a1b7d9SAlexander Kabaev typedef typename __promote<_Up>::__type __type2; 69*f8a1b7d9SAlexander Kabaev typedef typename __promote<_Vp>::__type __type3; 70*f8a1b7d9SAlexander Kabaev 71*f8a1b7d9SAlexander Kabaev public: 72*f8a1b7d9SAlexander Kabaev typedef __typeof__(__type1() + __type2() + __type3()) __type; 73*f8a1b7d9SAlexander Kabaev }; 74*f8a1b7d9SAlexander Kabaev 75*f8a1b7d9SAlexander Kabaev _GLIBCXX_END_NAMESPACE 76*f8a1b7d9SAlexander Kabaev } // namespace std 77*f8a1b7d9SAlexander Kabaev 78*f8a1b7d9SAlexander Kabaev #endif 79