101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim is free 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 Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2012 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_COORD_HPP
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#define __UTIL_COORD_HPP
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#include "../platform.hpp"
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namespace util {
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namespace detail {
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// Disable GCC warnings about validity of anonyous structures in
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// unions. Push comes to shove I'll manually redsign everything to
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// keep this syntax anyway.
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#pragma GCC diagnostic push
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#if defined(COMPILER_GCC)
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#pragma GCC diagnostic ignored "-pedantic"
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#endif
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#if defined(COMPILER_CLANG)
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#pragma GCC diagnostic ignored "-Wgnu"
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#endif
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template <size_t S>
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struct coord_data {
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coord_data () { ; }
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template <typename ...T>
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coord_data (T ...t): data{t...}
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{ ; }
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double data[S];
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};
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template <>
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struct coord_data<1> {
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coord_data () { ; }
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template <typename ...T>
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coord_data (T ...t): data{t...}
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{ ; }
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union {
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double data[1];
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double x;
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};
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};
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template <>
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struct coord_data<2> {
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coord_data () { ; }
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template <typename ...T>
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coord_data (T ...t): data{t...}
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{ ; }
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union {
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double data[2];
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struct {
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double x;
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double y;
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};
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};
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};
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template <>
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struct coord_data<3> {
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union {
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double data[3];
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struct {
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double x;
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double y;
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double z;
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};
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};
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coord_data () { ; }
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template <typename... T>
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coord_data (T... t): data{t...}
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{ ; }
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};
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#pragma GCC diagnostic pop
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}
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}
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#endif
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