qvm/detail/transp_impl.hpp

0001 #ifndef BOOST_QVM_DETAIL_TRANSP_IMPL_HPP_INCLUDED
0002 #define BOOST_QVM_DETAIL_TRANSP_IMPL_HPP_INCLUDED
0003
0004 // Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
0005
0006 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0007 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0008
0009 #include <boost/qvm/deduce_mat.hpp>
0010 #include <boost/qvm/static_assert.hpp>
0011 #include <boost/qvm/assert.hpp>
0012
0013 namespace boost { namespace qvm {
0014
0015 namespace
0016 qvm_detail
0017     {
0018     template <class OriginalMatrix>
0019     class
0020     transposed_
0021         {
0022         transposed_( transposed_ const & );
0023         transposed_ & operator=( transposed_ const & );
0024         ~transposed_();
0025
0026         public:
0027
0028         template <class T>
0029         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
0030         transposed_ &
0031         operator=( T const & x )
0032             {
0033             assign(*this,x);
0034             return *this;
0035             }
0036
0037         template <class R
0038 #if __cplusplus >= 201103L
0039             , class = typename enable_if<is_mat<R> >::type
0040 #endif
0041         >
0042         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL
0043         operator R() const
0044             {
0045             R r;
0046             assign(r,*this);
0047             return r;
0048             }
0049         };
0050
0051     template <class OriginalMatrix,bool WriteElementRef=mat_write_element_ref<OriginalMatrix>::value>
0052     struct transposed_write_traits;
0053
0054     template <class OriginalMatrix>
0055     struct
0056     transposed_write_traits<OriginalMatrix,true>
0057         {
0058         typedef typename mat_traits<OriginalMatrix>::scalar_type scalar_type;
0059         typedef transposed_<OriginalMatrix> this_matrix;
0060         static int const rows=mat_traits<OriginalMatrix>::cols;
0061         static int const cols=mat_traits<OriginalMatrix>::rows;
0062
0063         template <int Row,int Col>
0064         static
0065         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0066         scalar_type &
0067         write_element( this_matrix & x )
0068             {
0069             BOOST_QVM_STATIC_ASSERT(Row>=0);
0070             BOOST_QVM_STATIC_ASSERT(Row<rows);
0071             BOOST_QVM_STATIC_ASSERT(Col>=0);
0072             BOOST_QVM_STATIC_ASSERT(Col<cols);
0073             return mat_traits<OriginalMatrix>::template write_element<Col,Row>(reinterpret_cast<OriginalMatrix &>(x));
0074             }
0075
0076         static
0077         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0078         scalar_type &
0079         write_element_idx( int row, int col, this_matrix & x )
0080             {
0081             BOOST_QVM_ASSERT(row>=0);
0082             BOOST_QVM_ASSERT(row<rows);
0083             BOOST_QVM_ASSERT(col>=0);
0084             BOOST_QVM_ASSERT(col<cols);
0085             return mat_traits<OriginalMatrix>::write_element_idx(col,row,reinterpret_cast<OriginalMatrix &>(x));
0086             }
0087         };
0088
0089     template <class OriginalMatrix>
0090     struct
0091     transposed_write_traits<OriginalMatrix,false>
0092         {
0093         typedef typename mat_traits<OriginalMatrix>::scalar_type scalar_type;
0094         typedef transposed_<OriginalMatrix> this_matrix;
0095         static int const rows=mat_traits<OriginalMatrix>::cols;
0096         static int const cols=mat_traits<OriginalMatrix>::rows;
0097
0098         template <int Row,int Col>
0099         static
0100         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0101         void
0102         write_element( this_matrix & x, scalar_type s )
0103             {
0104             BOOST_QVM_STATIC_ASSERT(Row>=0);
0105             BOOST_QVM_STATIC_ASSERT(Row<rows);
0106             BOOST_QVM_STATIC_ASSERT(Col>=0);
0107             BOOST_QVM_STATIC_ASSERT(Col<cols);
0108             mat_traits<OriginalMatrix>::template write_element<Col,Row>(reinterpret_cast<OriginalMatrix &>(x), s);
0109             }
0110
0111         static
0112         BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0113         void
0114         write_element_idx( int row, int col, this_matrix & x, scalar_type s )
0115             {
0116             BOOST_QVM_ASSERT(row>=0);
0117             BOOST_QVM_ASSERT(row<rows);
0118             BOOST_QVM_ASSERT(col>=0);
0119             BOOST_QVM_ASSERT(col<cols);
0120             mat_traits<OriginalMatrix>::write_element_idx(col,row,reinterpret_cast<OriginalMatrix &>(x), s);
0121             }
0122         };
0123     }
0124
0125 template <class OriginalMatrix>
0126 struct
0127 mat_traits< qvm_detail::transposed_<OriginalMatrix> >:
0128     qvm_detail::transposed_write_traits<OriginalMatrix>
0129     {
0130     typedef typename mat_traits<OriginalMatrix>::scalar_type scalar_type;
0131     typedef qvm_detail::transposed_<OriginalMatrix> this_matrix;
0132     static int const rows=mat_traits<OriginalMatrix>::cols;
0133     static int const cols=mat_traits<OriginalMatrix>::rows;
0134
0135     template <int Row,int Col>
0136     static
0137     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0138     scalar_type
0139     read_element( this_matrix const & x )
0140         {
0141         BOOST_QVM_STATIC_ASSERT(Row>=0);
0142         BOOST_QVM_STATIC_ASSERT(Row<rows);
0143         BOOST_QVM_STATIC_ASSERT(Col>=0);
0144         BOOST_QVM_STATIC_ASSERT(Col<cols);
0145         return mat_traits<OriginalMatrix>::template read_element<Col,Row>(reinterpret_cast<OriginalMatrix const &>(x));
0146         }
0147
0148     static
0149     BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL
0150     scalar_type
0151     read_element_idx( int row, int col, this_matrix const & x )
0152         {
0153         BOOST_QVM_ASSERT(row>=0);
0154         BOOST_QVM_ASSERT(row<rows);
0155         BOOST_QVM_ASSERT(col>=0);
0156         BOOST_QVM_ASSERT(col<cols);
0157         return mat_traits<OriginalMatrix>::read_element_idx(col,row,reinterpret_cast<OriginalMatrix const &>(x));
0158         }
0159     };
0160
0161 template <class OriginalMatrix,int R,int C>
0162 struct
0163 deduce_mat<qvm_detail::transposed_<OriginalMatrix>,R,C>
0164     {
0165     typedef mat<typename mat_traits<OriginalMatrix>::scalar_type,R,C> type;
0166     };
0167
0168 template <class OriginalMatrix,int R,int C>
0169 struct
0170 deduce_mat2<qvm_detail::transposed_<OriginalMatrix>,qvm_detail::transposed_<OriginalMatrix>,R,C>
0171     {
0172     typedef mat<typename mat_traits<OriginalMatrix>::scalar_type,R,C> type;
0173     };
0174
0175 } }
0176
0177 #endif