00001 // This file is a part of Aurelia. 00002 // Copyright (C) 2010 Valentin David 00003 // Copyright (C) 2010 University of Bergen 00004 // 00005 // This program is free software: you can redistribute it and/or modify 00006 // it under the terms of the GNU General Public License as published by 00007 // the Free Software Foundation, either version 3 of the License, or 00008 // (at your option) any later version. 00009 // 00010 // This program is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 00018 #ifndef __STATIC_BIN_LOG_HH 00019 # define __STATIC_BIN_LOG_HH 00020 00021 # include <type_traits> 00022 00023 namespace fast { 00024 template <typename integral_type, typename N> 00025 struct static_bin_log_wrapped: public 00026 std::integral_constant<integral_type, 00027 static_bin_log_wrapped<integral_type, 00028 std::integral_constant< 00029 integral_type, 00030 (N::value>>1)> > 00031 ::value+1> {}; 00032 00033 template <typename integral_type> 00034 struct static_bin_log_wrapped<integral_type, 00035 std::integral_constant<integral_type, 00036 1> >: 00037 public std::integral_constant<integral_type, 0> {}; 00038 00039 template <typename integral_type, integral_type N> 00040 struct static_bin_log: public 00041 static_bin_log_wrapped<integral_type, 00042 std::integral_constant< 00043 integral_type, 00044 N> > 00045 {}; 00046 } 00047 00048 #endif