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Diff: tvmet/MatrixFunctions.h
- Revision:
- 15:9c5aaeda36dc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tvmet/MatrixFunctions.h Sat Apr 06 20:57:54 2013 +0000 @@ -0,0 +1,1377 @@ +/* + * Tiny Vector Matrix Library + * Dense Vector Matrix Libary of Tiny size using Expression Templates + * + * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, 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 + * lesser General Public License for more details. + * + * You should have received a copy of the GNU lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * $Id: MatrixFunctions.h,v 1.65 2007-06-23 15:58:58 opetzold Exp $ + */ + +#ifndef TVMET_MATRIX_FUNCTIONS_H +#define TVMET_MATRIX_FUNCTIONS_H + +#include <tvmet/Extremum.h> + +namespace tvmet { + +/* forwards */ +template<class T, std::size_t Sz> class Vector; +template<class T, std::size_t Sz> class VectorConstReference; + + +/********************************************************* + * PART I: DECLARATION + *********************************************************/ + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * Vector arithmetic functions add, sub, mul and div + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/* + * function(Matrix<T1, Rows, Cols>, Matrix<T2, Rows, Cols>) + * function(XprMatrix<E, Rows, Cols>, Matrix<T, Rows, Cols>) + * function(Matrix<T, Rows, Cols>, XprMatrix<E, Rows, Cols>) + */ +#define TVMET_DECLARE_MACRO(NAME) \ +template<class T1, class T2, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<T1, T2>, \ + MatrixConstReference<T1, Rows, Cols>, \ + MatrixConstReference<T2, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix<T1, Rows, Cols>& lhs, \ + const Matrix<T2, Rows, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; \ + \ +template<class E, class T, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<typename E::value_type, T>, \ + XprMatrix<E, Rows, Cols>, \ + MatrixConstReference<T, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const XprMatrix<E, Rows, Cols>& lhs, \ + const Matrix<T, Rows, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; \ + \ +template<class T, class E, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<typename E::value_type, T>, \ + MatrixConstReference<T, Rows, Cols>, \ + XprMatrix<E, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix<T, Rows, Cols>& lhs, \ + const XprMatrix<E, Rows, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + +TVMET_DECLARE_MACRO(add) // per se element wise +TVMET_DECLARE_MACRO(sub) // per se element wise +namespace element_wise { + TVMET_DECLARE_MACRO(mul) // not defined for matrizes + TVMET_DECLARE_MACRO(div) // not defined for matrizes +} + +#undef TVMET_DECLARE_MACRO + + +/* + * function(Matrix<T, Rows, Cols>, POD) + * function(POD, Matrix<T, Rows, Cols>) + * Note: - operations +,-,*,/ are per se element wise + */ +#define TVMET_DECLARE_MACRO(NAME, POD) \ +template<class T, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<T, POD >, \ + MatrixConstReference<T, Rows, Cols>, \ + XprLiteral<POD > \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix<T, Rows, Cols>& lhs, \ + POD rhs) TVMET_CXX_ALWAYS_INLINE; \ + \ +template<class T, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME< POD, T>, \ + XprLiteral< POD >, \ + MatrixConstReference<T, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (POD lhs, \ + const Matrix<T, Rows, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + +TVMET_DECLARE_MACRO(add, int) +TVMET_DECLARE_MACRO(sub, int) +TVMET_DECLARE_MACRO(mul, int) +TVMET_DECLARE_MACRO(div, int) + +#if defined(TVMET_HAVE_LONG_LONG) +TVMET_DECLARE_MACRO(add, long long int) +TVMET_DECLARE_MACRO(sub, long long int) +TVMET_DECLARE_MACRO(mul, long long int) +TVMET_DECLARE_MACRO(div, long long int) +#endif + +TVMET_DECLARE_MACRO(add, float) +TVMET_DECLARE_MACRO(sub, float) +TVMET_DECLARE_MACRO(mul, float) +TVMET_DECLARE_MACRO(div, float) + +TVMET_DECLARE_MACRO(add, double) +TVMET_DECLARE_MACRO(sub, double) +TVMET_DECLARE_MACRO(mul, double) +TVMET_DECLARE_MACRO(div, double) + +#if defined(TVMET_HAVE_LONG_DOUBLE) +TVMET_DECLARE_MACRO(add, long double) +TVMET_DECLARE_MACRO(sub, long double) +TVMET_DECLARE_MACRO(mul, long double) +TVMET_DECLARE_MACRO(div, long double) +#endif + +#undef TVMET_DECLARE_MACRO + + +#if defined(TVMET_HAVE_COMPLEX) +/* + * function(Matrix<T, Rows, Cols>, complex<T>) + * function(complex<T>, Matrix<T, Rows, Cols>) + * Note: - operations +,-,*,/ are per se element wise + * \todo type promotion + */ +#define TVMET_DECLARE_MACRO(NAME) \ +template<class T, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME< std::complex<T>, std::complex<T> >, \ + MatrixConstReference< std::complex<T>, Rows, Cols>, \ + XprLiteral<std::complex<T> > \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix< std::complex<T>, Rows, Cols>& lhs, \ + const std::complex<T>& rhs) TVMET_CXX_ALWAYS_INLINE; \ + \ +template<class T, std::size_t Rows, std::size_t Cols> \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME< std::complex<T>, std::complex<T> >, \ + XprLiteral< std::complex<T> >, \ + MatrixConstReference< std::complex<T>, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const std::complex<T>& lhs, \ + const Matrix< std::complex<T>, Rows, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + +TVMET_DECLARE_MACRO(add) +TVMET_DECLARE_MACRO(sub) +TVMET_DECLARE_MACRO(mul) +TVMET_DECLARE_MACRO(div) + +#undef TVMET_DECLARE_MACRO + +#endif // defined(TVMET_HAVE_COMPLEX) + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * matrix specific prod( ... ) functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> +XprMatrix< + XprMMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Rows1, Cols2 // return Dim +> +prod(const Matrix<T1, Rows1, Cols1>& lhs, + const Matrix<T2, Cols1, Cols2>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class E1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> +XprMatrix< + XprMMProduct< + XprMatrix<E1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Rows1, Cols2 // return Dim +> +prod(const XprMatrix<E1, Rows1, Cols1>& lhs, + const Matrix<T2, Cols1, Cols2>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T1, std::size_t Rows1, std::size_t Cols1, + class E2, std::size_t Cols2> +XprMatrix< + XprMMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + XprMatrix<E2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Rows1, Cols2 // return Dim +> +prod(const Matrix<T1, Rows1, Cols1>& lhs, + const XprMatrix<E2, Cols1, Cols2>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> +XprMatrix< + XprMMProductTransposed< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Cols2, Rows1 // return Dim +> +trans_prod(const Matrix<T1, Rows1, Cols1>& lhs, + const Matrix<T2, Cols1, Cols2>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> // Rows2 = Rows1 +XprMatrix< + XprMtMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Rows1, Cols2>, Cols2 // M2(Rows1, Cols2) + >, + Cols1, Cols2 // return Dim +> +MtM_prod(const Matrix<T1, Rows1, Cols1>& lhs, + const Matrix<T2, Rows1, Cols2>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Rows2> +XprMatrix< + XprMMtProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Rows2, Cols1>, Cols1 // M2(Rows2, Cols1) + >, + Rows1, Rows2 // return Dim +> +MMt_prod(const Matrix<T1, Rows1, Cols1>& lhs, + const Matrix<T2, Rows2, Cols1>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * matrix-vector specific prod( ... ) functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +template<class T1, class T2, std::size_t Rows, std::size_t Cols> +XprVector< + XprMVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, // M(Rows, Cols) + VectorConstReference<T2, Cols> // V + >, + Rows +> +prod(const Matrix<T1, Rows, Cols>& lhs, + const Vector<T2, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T1, class E2, std::size_t Rows, std::size_t Cols> +XprVector< + XprMVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, + XprVector<E2, Cols> + >, + Rows +> +prod(const Matrix<T1, Rows, Cols>& lhs, + const XprVector<E2, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class E1, class T2, std::size_t Rows, std::size_t Cols> +XprVector< + XprMVProduct< + XprMatrix<E1, Rows, Cols>, Rows, Cols, // M(Rows, Cols) + VectorConstReference<T2, Cols> // V + >, + Rows +> +prod(const XprMatrix<E1, Rows, Cols>& lhs, + const Vector<T2, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T1, class T2, std::size_t Rows, std::size_t Cols> +XprVector< + XprMtVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, // M(Rows, Cols) + VectorConstReference<T2, Rows> // V + >, + Cols +> +Mtx_prod(const Matrix<T1, Rows, Cols>& lhs, + const Vector<T2, Rows>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * matrix specific functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +template<class T, std::size_t Rows, std::size_t Cols> +XprMatrix< + XprMatrixTranspose< + MatrixConstReference<T, Rows, Cols> + >, + Cols, Rows +> +trans(const Matrix<T, Rows, Cols>& rhs) TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Sz> +typename NumericTraits<T>::sum_type +trace(const Matrix<T, Sz, Sz>& m) TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +XprVector< + XprMatrixRow< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols + >, + Cols +> +row(const Matrix<T, Rows, Cols>& m, + std::size_t no) TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +XprVector< + XprMatrixCol< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols + >, + Rows +> +col(const Matrix<T, Rows, Cols>& m, + std::size_t no) TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Sz> +XprVector< + XprMatrixDiag< + MatrixConstReference<T, Sz, Sz>, + Sz + >, + Sz +> +diag(const Matrix<T, Sz, Sz>& m) TVMET_CXX_ALWAYS_INLINE; + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * min/max unary functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +template<class E, std::size_t Rows, std::size_t Cols> +Extremum<typename E::value_type, std::size_t, matrix_tag> +maximum(const XprMatrix<E, Rows, Cols>& e); // NOT TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +Extremum<T, std::size_t, matrix_tag> +maximum(const Matrix<T, Rows, Cols>& m) TVMET_CXX_ALWAYS_INLINE; + + +template<class E, std::size_t Rows, std::size_t Cols> +Extremum<typename E::value_type, std::size_t, matrix_tag> +minimum(const XprMatrix<E, Rows, Cols>& e); // NOT TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +Extremum<T, std::size_t, matrix_tag> +minimum(const Matrix<T, Rows, Cols>& m) TVMET_CXX_ALWAYS_INLINE; + + +template<class E, std::size_t Rows, std::size_t Cols> +typename E::value_type +max(const XprMatrix<E, Rows, Cols>& e); // NOT TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +T max(const Matrix<T, Rows, Cols>& m) TVMET_CXX_ALWAYS_INLINE; + + +template<class E, std::size_t Rows, std::size_t Cols> +typename E::value_type +min(const XprMatrix<E, Rows, Cols>& e); // NOT TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +T min(const Matrix<T, Rows, Cols>& m) TVMET_CXX_ALWAYS_INLINE; + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * other unary functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +template<class T, std::size_t Rows, std::size_t Cols> +XprMatrix< + XprIdentity<T, Rows, Cols>, + Rows, Cols +> +identity() TVMET_CXX_ALWAYS_INLINE; + + +template<class M> +XprMatrix< + XprIdentity< + typename M::value_type, + M::Rows, M::Cols>, + M::Rows, M::Cols +> +identity() TVMET_CXX_ALWAYS_INLINE; + + +template<class T, std::size_t Rows, std::size_t Cols> +XprMatrix< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols +> +cmatrix_ref(const T* mem) TVMET_CXX_ALWAYS_INLINE; + + +/********************************************************* + * PART II: IMPLEMENTATION + *********************************************************/ + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * Vector arithmetic functions add, sub, mul and div + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/* + * function(Matrix<T1, Rows, Cols>, Matrix<T2, Rows, Cols>) + * function(XprMatrix<E, Rows, Cols>, Matrix<T, Rows, Cols>) + * function(Matrix<T, Rows, Cols>, XprMatrix<E, Rows, Cols>) + */ +#define TVMET_IMPLEMENT_MACRO(NAME) \ +template<class T1, class T2, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<T1, T2>, \ + MatrixConstReference<T1, Rows, Cols>, \ + MatrixConstReference<T2, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix<T1, Rows, Cols>& lhs, const Matrix<T2, Rows, Cols>& rhs) { \ + typedef XprBinOp < \ + Fcnl_##NAME<T1, T2>, \ + MatrixConstReference<T1, Rows, Cols>, \ + MatrixConstReference<T2, Rows, Cols> \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(lhs.const_ref(), rhs.const_ref())); \ +} \ + \ +template<class E, class T, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<typename E::value_type, T>, \ + XprMatrix<E, Rows, Cols>, \ + MatrixConstReference<T, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const XprMatrix<E, Rows, Cols>& lhs, const Matrix<T, Rows, Cols>& rhs) { \ + typedef XprBinOp< \ + Fcnl_##NAME<typename E::value_type, T>, \ + XprMatrix<E, Rows, Cols>, \ + MatrixConstReference<T, Rows, Cols> \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(lhs, rhs.const_ref())); \ +} \ + \ +template<class T, class E, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<typename E::value_type, T>, \ + MatrixConstReference<T, Rows, Cols>, \ + XprMatrix<E, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix<T, Rows, Cols>& lhs, const XprMatrix<E, Rows, Cols>& rhs) { \ + typedef XprBinOp< \ + Fcnl_##NAME<T, typename E::value_type>, \ + MatrixConstReference<T, Rows, Cols>, \ + XprMatrix<E, Rows, Cols> \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(lhs.const_ref(), rhs)); \ +} + +TVMET_IMPLEMENT_MACRO(add) // per se element wise +TVMET_IMPLEMENT_MACRO(sub) // per se element wise +namespace element_wise { + TVMET_IMPLEMENT_MACRO(mul) // not defined for matrizes + TVMET_IMPLEMENT_MACRO(div) // not defined for matrizes +} + +#undef TVMET_IMPLEMENT_MACRO + + +/* + * function(Matrix<T, Rows, Cols>, POD) + * function(POD, Matrix<T, Rows, Cols>) + * Note: - operations +,-,*,/ are per se element wise + */ +#define TVMET_IMPLEMENT_MACRO(NAME, POD) \ +template<class T, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME<T, POD >, \ + MatrixConstReference<T, Rows, Cols>, \ + XprLiteral<POD > \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix<T, Rows, Cols>& lhs, POD rhs) { \ + typedef XprBinOp< \ + Fcnl_##NAME<T, POD >, \ + MatrixConstReference<T, Rows, Cols>, \ + XprLiteral< POD > \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(lhs.const_ref(), XprLiteral< POD >(rhs))); \ +} \ + \ +template<class T, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME< POD, T>, \ + XprLiteral< POD >, \ + MatrixConstReference<T, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (POD lhs, const Matrix<T, Rows, Cols>& rhs) { \ + typedef XprBinOp< \ + Fcnl_##NAME< POD, T>, \ + XprLiteral< POD >, \ + MatrixConstReference<T, Rows, Cols> \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(XprLiteral< POD >(lhs), rhs.const_ref())); \ +} + +TVMET_IMPLEMENT_MACRO(add, int) +TVMET_IMPLEMENT_MACRO(sub, int) +TVMET_IMPLEMENT_MACRO(mul, int) +TVMET_IMPLEMENT_MACRO(div, int) + +#if defined(TVMET_HAVE_LONG_LONG) +TVMET_IMPLEMENT_MACRO(add, long long int) +TVMET_IMPLEMENT_MACRO(sub, long long int) +TVMET_IMPLEMENT_MACRO(mul, long long int) +TVMET_IMPLEMENT_MACRO(div, long long int) +#endif + +TVMET_IMPLEMENT_MACRO(add, float) +TVMET_IMPLEMENT_MACRO(sub, float) +TVMET_IMPLEMENT_MACRO(mul, float) +TVMET_IMPLEMENT_MACRO(div, float) + +TVMET_IMPLEMENT_MACRO(add, double) +TVMET_IMPLEMENT_MACRO(sub, double) +TVMET_IMPLEMENT_MACRO(mul, double) +TVMET_IMPLEMENT_MACRO(div, double) + +#if defined(TVMET_HAVE_LONG_DOUBLE) +TVMET_IMPLEMENT_MACRO(add, long double) +TVMET_IMPLEMENT_MACRO(sub, long double) +TVMET_IMPLEMENT_MACRO(mul, long double) +TVMET_IMPLEMENT_MACRO(div, long double) +#endif + +#undef TVMET_IMPLEMENT_MACRO + + +#if defined(TVMET_HAVE_COMPLEX) +/* + * function(Matrix<T, Rows, Cols>, complex<T>) + * function(complex<T>, Matrix<T, Rows, Cols>) + * Note: - operations +,-,*,/ are per se element wise + * \todo type promotion + */ +#define TVMET_IMPLEMENT_MACRO(NAME) \ +template<class T, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME< std::complex<T>, std::complex<T> >, \ + MatrixConstReference< std::complex<T>, Rows, Cols>, \ + XprLiteral<std::complex<T> > \ + >, \ + Rows, Cols \ +> \ +NAME (const Matrix< std::complex<T>, Rows, Cols>& lhs, \ + const std::complex<T>& rhs) { \ + typedef XprBinOp< \ + Fcnl_##NAME< std::complex<T>, std::complex<T> >, \ + MatrixConstReference< std::complex<T>, Rows, Cols>, \ + XprLiteral< std::complex<T> > \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(lhs.const_ref(), XprLiteral< std::complex<T> >(rhs))); \ +} \ + \ +template<class T, std::size_t Rows, std::size_t Cols> \ +inline \ +XprMatrix< \ + XprBinOp< \ + Fcnl_##NAME< std::complex<T>, std::complex<T> >, \ + XprLiteral< std::complex<T> >, \ + MatrixConstReference< std::complex<T>, Rows, Cols> \ + >, \ + Rows, Cols \ +> \ +NAME (const std::complex<T>& lhs, \ + const Matrix< std::complex<T>, Rows, Cols>& rhs) { \ + typedef XprBinOp< \ + Fcnl_##NAME< std::complex<T>, std::complex<T> >, \ + XprLiteral< std::complex<T> >, \ + MatrixConstReference<std::complex<T>, Rows, Cols> \ + > expr_type; \ + return XprMatrix<expr_type, Rows, Cols>( \ + expr_type(XprLiteral< std::complex<T> >(lhs), rhs.const_ref())); \ +} + +TVMET_IMPLEMENT_MACRO(add) +TVMET_IMPLEMENT_MACRO(sub) +TVMET_IMPLEMENT_MACRO(mul) +TVMET_IMPLEMENT_MACRO(div) + +#undef TVMET_IMPLEMENT_MACRO + +#endif // defined(TVMET_HAVE_COMPLEX) + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * matrix specific prod( ... ) functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/** + * \fn prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Cols1, Cols2>& rhs) + * \brief Function for the matrix-matrix-product. + * \ingroup _binary_function + * \note The rows2 has to be equal to cols1. + */ +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> +inline +XprMatrix< + XprMMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Rows1, Cols2 // return Dim +> +prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Cols1, Cols2>& rhs) { + typedef XprMMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, + MatrixConstReference<T2, Cols1, Cols2>, Cols2 + > expr_type; + return XprMatrix<expr_type, Rows1, Cols2>( + expr_type(lhs.const_ref(), rhs.const_ref())); +} + + +/** + * \fn prod(const XprMatrix<E1, Rows1, Cols1>& lhs, const Matrix<T2, Cols1, Cols2>& rhs) + * \brief Evaluate the product of XprMatrix and Matrix. + * \ingroup _binary_function + */ +template<class E1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> +inline +XprMatrix< + XprMMProduct< + XprMatrix<E1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Rows1, Cols2 // return Dim +> +prod(const XprMatrix<E1, Rows1, Cols1>& lhs, const Matrix<T2, Cols1, Cols2>& rhs) { + typedef XprMMProduct< + XprMatrix<E1, Rows1, Cols1>, Rows1, Cols1, + MatrixConstReference<T2, Cols1, Cols2>, Cols2 + > expr_type; + return XprMatrix<expr_type, Rows1, Cols2>( + expr_type(lhs, rhs.const_ref())); +} + + +/** + * \fn prod(const Matrix<T1, Rows1, Cols1>& lhs, const XprMatrix<E2, Cols1, Cols2>& rhs) + * \brief Evaluate the product of Matrix and XprMatrix. + * \ingroup _binary_function + */ +template<class T1, std::size_t Rows1, std::size_t Cols1, + class E2, std::size_t Cols2> +inline +XprMatrix< + XprMMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + XprMatrix<E2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Rows1, Cols2 // return Dim +> +prod(const Matrix<T1, Rows1, Cols1>& lhs, const XprMatrix<E2, Cols1, Cols2>& rhs) { + typedef XprMMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, + XprMatrix<E2, Cols1, Cols2>, Cols2 + > expr_type; + return XprMatrix<expr_type, Rows1, Cols2>( + expr_type(lhs.const_ref(), rhs)); +} + + +/** + * \fn trans_prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Cols1, Cols2>& rhs) + * \brief Function for the trans(matrix-matrix-product) + * \ingroup _binary_function + * Perform on given Matrix M1 and M2: + * \f[ + * (M_1\,M_2)^T + * \f] + */ +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> +inline +XprMatrix< + XprMMProductTransposed< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Cols1, Cols2>, Cols2 // M2(Cols1, Cols2) + >, + Cols2, Rows1 // return Dim +> +trans_prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Cols1, Cols2>& rhs) { + typedef XprMMProductTransposed< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, + MatrixConstReference<T2, Cols1, Cols2>, Cols2 + > expr_type; + return XprMatrix<expr_type, Cols2, Rows1>( + expr_type(lhs.const_ref(), rhs.const_ref())); +} + + +/** + * \fn MtM_prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Rows1, Cols2>& rhs) + * \brief Function for the trans(matrix)-matrix-product. + * \ingroup _binary_function + * using formula + * \f[ + * M_1^{T}\,M_2 + * \f] + * \note The number of cols of matrix 2 have to be equal to number of rows of + * matrix 1, since matrix 1 is trans - the result is a (Cols1 x Cols2) + * matrix. + */ +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Cols2> // Rows2 = Rows1 +inline +XprMatrix< + XprMtMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Rows1, Cols2>, Cols2 // M2(Rows1, Cols2) + >, + Cols1, Cols2 // return Dim +> +MtM_prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Rows1, Cols2>& rhs) { + typedef XprMtMProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, + MatrixConstReference<T2, Rows1, Cols2>, Cols2 + > expr_type; + return XprMatrix<expr_type, Cols1, Cols2>( + expr_type(lhs.const_ref(), rhs.const_ref())); +} + + +/** + * \fn MMt_prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Rows2, Cols1>& rhs) + * \brief Function for the matrix-trans(matrix)-product. + * \ingroup _binary_function + * \note The Cols2 has to be equal to Cols1. + */ +template<class T1, std::size_t Rows1, std::size_t Cols1, + class T2, std::size_t Rows2> +inline +XprMatrix< + XprMMtProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, // M1(Rows1, Cols1) + MatrixConstReference<T2, Rows2, Cols1>, Cols1 // M2(Rows2, Cols1) + >, + Rows1, Rows2 // return Dim +> +MMt_prod(const Matrix<T1, Rows1, Cols1>& lhs, const Matrix<T2, Rows2, Cols1>& rhs) { + typedef XprMMtProduct< + MatrixConstReference<T1, Rows1, Cols1>, Rows1, Cols1, + MatrixConstReference<T2, Rows2, Cols1>, Cols1 + > expr_type; + return XprMatrix<expr_type, Rows1, Rows2>( + expr_type(lhs.const_ref(), rhs.const_ref())); +} + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * matrix-vector specific prod( ... ) functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/** + * \fn prod(const Matrix<T1, Rows, Cols>& lhs, const Vector<T2, Cols>& rhs) + * \brief Function for the matrix-vector-product + * \ingroup _binary_function + */ +template<class T1, class T2, std::size_t Rows, std::size_t Cols> +inline +XprVector< + XprMVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, // M(Rows, Cols) + VectorConstReference<T2, Cols> // V + >, + Rows +> +prod(const Matrix<T1, Rows, Cols>& lhs, const Vector<T2, Cols>& rhs) { + typedef XprMVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, + VectorConstReference<T2, Cols> + > expr_type; + return XprVector<expr_type, Rows>( + expr_type(lhs.const_ref(), rhs.const_ref())); +} + + +/** + * \fn prod(const Matrix<T1, Rows, Cols>& lhs, const XprVector<E2, Cols>& rhs) + * \brief Function for the matrix-vector-product + * \ingroup _binary_function + */ +template<class T1, class E2, std::size_t Rows, std::size_t Cols> +inline +XprVector< + XprMVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, + XprVector<E2, Cols> + >, + Rows +> +prod(const Matrix<T1, Rows, Cols>& lhs, const XprVector<E2, Cols>& rhs) { + typedef XprMVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, + XprVector<E2, Cols> + > expr_type; + return XprVector<expr_type, Rows>( + expr_type(lhs.const_ref(), rhs)); +} + + +/* + * \fn prod(const XprMatrix<E, Rows, Cols>& lhs, const Vector<T, Cols>& rhs) + * \brief Compute the product of an XprMatrix with a Vector. + * \ingroup _binary_function + */ +template<class E1, class T2, std::size_t Rows, std::size_t Cols> +inline +XprVector< + XprMVProduct< + XprMatrix<E1, Rows, Cols>, Rows, Cols, // M(Rows, Cols) + VectorConstReference<T2, Cols> // V + >, + Rows +> +prod(const XprMatrix<E1, Rows, Cols>& lhs, const Vector<T2, Cols>& rhs) { + typedef XprMVProduct< + XprMatrix<E1, Rows, Cols>, Rows, Cols, + VectorConstReference<T2, Cols> + > expr_type; + return XprVector<expr_type, Rows>( + expr_type(lhs, rhs.const_ref())); +} + + +/** + * \fn Mtx_prod(const Matrix<T1, Rows, Cols>& matrix, const Vector<T2, Rows>& vector) + * \brief Function for the trans(matrix)-vector-product + * \ingroup _binary_function + * Perform on given Matrix M and vector x: + * \f[ + * M^T\, x + * \f] + */ +template<class T1, class T2, std::size_t Rows, std::size_t Cols> +inline +XprVector< + XprMtVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, // M(Rows, Cols) + VectorConstReference<T2, Rows> // V + >, + Cols +> +Mtx_prod(const Matrix<T1, Rows, Cols>& lhs, const Vector<T2, Rows>& rhs) { + typedef XprMtVProduct< + MatrixConstReference<T1, Rows, Cols>, Rows, Cols, + VectorConstReference<T2, Rows> + > expr_type; + return XprVector<expr_type, Cols>( + expr_type(lhs.const_ref(), rhs.const_ref())); +} + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * matrix specific functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/** + * \fn trans(const Matrix<T, Rows, Cols>& rhs) + * \brief Transpose the matrix + * \ingroup _unary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +XprMatrix< + XprMatrixTranspose< + MatrixConstReference<T, Rows, Cols> + >, + Cols, Rows +> +trans(const Matrix<T, Rows, Cols>& rhs) { + typedef XprMatrixTranspose< + MatrixConstReference<T, Rows, Cols> + > expr_type; + return XprMatrix<expr_type, Cols, Rows>( + expr_type(rhs.const_ref())); +} + + +/* + * \fn trace(const Matrix<T, Sz, Sz>& m) + * \brief Compute the trace of a square matrix. + * \ingroup _unary_function + * + * Simply compute the trace of the given matrix as: + * \f[ + * \sum_{k = 0}^{Sz-1} m(k, k) + * \f] + */ +template<class T, std::size_t Sz> +inline +typename NumericTraits<T>::sum_type +trace(const Matrix<T, Sz, Sz>& m) { + return meta::Matrix<Sz, Sz, 0, 0>::trace(m); +} + + +/** + * \fn row(const Matrix<T, Rows, Cols>& m, std::size_t no) + * \brief Returns a row vector of the given matrix. + * \ingroup _binary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +XprVector< + XprMatrixRow< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols + >, + Cols +> +row(const Matrix<T, Rows, Cols>& m, std::size_t no) { + typedef XprMatrixRow< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols + > expr_type; + return XprVector<expr_type, Cols>(expr_type(m.const_ref(), no)); +} + + +/** + * \fn col(const Matrix<T, Rows, Cols>& m, std::size_t no) + * \brief Returns a column vector of the given matrix. + * \ingroup _binary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +XprVector< + XprMatrixCol< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols + >, + Rows +> +col(const Matrix<T, Rows, Cols>& m, std::size_t no) { + typedef XprMatrixCol< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols + > expr_type; + return XprVector<expr_type, Rows>(expr_type(m.const_ref(), no)); +} + + +/** + * \fn diag(const Matrix<T, Sz, Sz>& m) + * \brief Returns the diagonal vector of the given square matrix. + * \ingroup _unary_function + */ +template<class T, std::size_t Sz> +inline +XprVector< + XprMatrixDiag< + MatrixConstReference<T, Sz, Sz>, + Sz + >, + Sz +> +diag(const Matrix<T, Sz, Sz>& m) { + typedef XprMatrixDiag< + MatrixConstReference<T, Sz, Sz>, + Sz + > expr_type; + return XprVector<expr_type, Sz>(expr_type(m.const_ref())); +} + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * min/max unary functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/** + * \fn maximum(const XprMatrix<E, Rows, Cols>& e) + * \brief Find the maximum of a matrix expression + * \ingroup _unary_function + */ +template<class E, std::size_t Rows, std::size_t Cols> +inline +Extremum<typename E::value_type, std::size_t, matrix_tag> +maximum(const XprMatrix<E, Rows, Cols>& e) { + typedef typename E::value_type value_type; + + value_type temp(e(0, 0)); + std::size_t row_no(0), col_no(0); + + for(std::size_t i = 0; i != Rows; ++i) { + for(std::size_t j = 0; j != Cols; ++j) { + if(e(i, j) > temp) { + temp = e(i, j); + row_no = i; + col_no = j; + } + } + } + + return Extremum<value_type, std::size_t, matrix_tag>(temp, row_no, col_no); +} + + +/** + * \fn maximum(const Matrix<T, Rows, Cols>& m) + * \brief Find the maximum of a matrix + * \ingroup _unary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +Extremum<T, std::size_t, matrix_tag> +maximum(const Matrix<T, Rows, Cols>& m) { return maximum(m.as_expr()); } + + +/** + * \fn minimum(const XprMatrix<E, Rows, Cols>& e) + * \brief Find the minimum of a matrix expression + * \ingroup _unary_function + */ +template<class E, std::size_t Rows, std::size_t Cols> +inline +Extremum<typename E::value_type, std::size_t, matrix_tag> +minimum(const XprMatrix<E, Rows, Cols>& e) { + typedef typename E::value_type value_type; + + value_type temp(e(0, 0)); + std::size_t row_no(0), col_no(0); + + for(std::size_t i = 0; i != Rows; ++i) { + for(std::size_t j = 0; j != Cols; ++j) { + if(e(i, j) < temp) { + temp = e(i, j); + row_no = i; + col_no = j; + } + } + } + + return Extremum<value_type, std::size_t, matrix_tag>(temp, row_no, col_no); +} + + +/** + * \fn minimum(const Matrix<T, Rows, Cols>& m) + * \brief Find the minimum of a matrix + * \ingroup _unary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +Extremum<T, std::size_t, matrix_tag> +minimum(const Matrix<T, Rows, Cols>& m) { return minimum(m.as_expr()); } + + +/** + * \fn max(const XprMatrix<E, Rows, Cols>& e) + * \brief Find the maximum of a matrix expression + * \ingroup _unary_function + */ +template<class E, std::size_t Rows, std::size_t Cols> +inline +typename E::value_type +max(const XprMatrix<E, Rows, Cols>& e) { + typedef typename E::value_type value_type; + + value_type temp(e(0, 0)); + + for(std::size_t i = 0; i != Rows; ++i) + for(std::size_t j = 0; j != Cols; ++j) + if(e(i, j) > temp) + temp = e(i, j); + + return temp; +} + + +/** + * \fn max(const Matrix<T, Rows, Cols>& m) + * \brief Find the maximum of a matrix + * \ingroup _unary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +T max(const Matrix<T, Rows, Cols>& m) { + typedef T value_type; + typedef typename Matrix< + T, Rows, Cols + >::const_iterator const_iterator; + + const_iterator iter(m.begin()); + const_iterator last(m.end()); + value_type temp(*iter); + + for( ; iter != last; ++iter) + if(*iter > temp) + temp = *iter; + + return temp; +} + + +/** + * \fn min(const XprMatrix<E, Rows, Cols>& e) + * \brief Find the minimum of a matrix expression + * \ingroup _unary_function + */ +template<class E, std::size_t Rows, std::size_t Cols> +inline +typename E::value_type +min(const XprMatrix<E, Rows, Cols>& e) { + typedef typename E::value_type value_type; + + value_type temp(e(0, 0)); + + for(std::size_t i = 0; i != Rows; ++i) + for(std::size_t j = 0; j != Cols; ++j) + if(e(i, j) < temp) + temp = e(i, j); + + return temp; +} + + +/** + * \fn min(const Matrix<T, Rows, Cols>& m) + * \brief Find the minimum of a matrix + * \ingroup _unary_function + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +T min(const Matrix<T, Rows, Cols>& m) { + typedef T value_type; + typedef typename Matrix< + T, Rows, Cols + >::const_iterator const_iterator; + + const_iterator iter(m.begin()); + const_iterator last(m.end()); + value_type temp(*iter); + + for( ; iter != last; ++iter) + if(*iter < temp) + temp = *iter; + + return temp; +} + + +/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + * other unary functions + *+++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ + + +/** + * \fn XprMatrix<XprIdentity<typename M::value_type, M::Rows, M::Cols>, M::Rows, M::Cols>identity() + * \brief Fill a matrix to an identity matrix. + * \ingroup _unary_function + * + * \note The matrix doesn't need to be square. Only the elements + * where the current number of rows are equal to columns + * will be set to 1, else to 0. + * + * \par Usage: + * \code + * typedef Matrix<double,3,3> matrix_type; + * ... + * matrix_type E( identity<double, 3, 3>() ); + * \endcode + * + * Note, we have to specify the type, number of rows and columns + * since ADL can't work here. + * + * + * + * \since release 1.6.0 + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +XprMatrix< + XprIdentity<T, Rows, Cols>, + Rows, Cols +> +identity() { + typedef XprIdentity<T, Rows, Cols> expr_type; + + return XprMatrix<expr_type, Rows, Cols>(expr_type()); +} + +/** + * \fn XprMatrix<XprIdentity<typename M::value_type, M::Rows, M::Cols>, M::Rows, M::Cols>identity() + * \brief Fill a matrix to an identity matrix (convenience wrapper + * for matrix typedefs). + * \ingroup _unary_function + * + * \note The matrix doesn't need to be square. Only the elements + * where the current number of rows are equal to columns + * will be set to 1, else to 0. + * + * \par Usage: + * \code + * typedef Matrix<double,3,3> matrix_type; + * ... + * matrix_type E( identity<matrix_type>() ); + * \endcode + * + * Note, we have to specify the matrix type, since ADL can't work here. + * + * \since release 1.6.0 + */ +template<class M> +inline +XprMatrix< + XprIdentity< + typename M::value_type, + M::Rows, M::Cols>, + M::Rows, M::Cols +> +identity() { + return identity<typename M::value_type, M::Rows, M::Cols>(); +} + + +/** + * \fn cmatrix_ref(const T* mem) + * \brief Creates an expression wrapper for a C like matrices. + * \ingroup _unary_function + * + * This is like creating a matrix of external data, as described + * at \ref construct. With this function you wrap an expression + * around a C style matrix and you can operate directly with it + * as usual. + * + * \par Example: + * \code + * static float lhs[3][3] = { + * {-1, 0, 1}, { 1, 0, 1}, {-1, 0, -1} + * }; + * static float rhs[3][3] = { + * { 0, 1, 1}, { 0, 1, -1}, { 0, -1, 1} + * }; + * ... + * + * typedef Matrix<float, 3, 3> matrix_type; + * + * matrix_type M( cmatrix_ref<float, 3, 3>(&lhs[0][0]) + * * cmatrix_ref<float, 3, 3>(&rhs[0][0]) ); + * \endcode + * + * \since release 1.6.0 + */ +template<class T, std::size_t Rows, std::size_t Cols> +inline +XprMatrix< + MatrixConstReference<T, Rows, Cols>, + Rows, Cols +> +cmatrix_ref(const T* mem) { + typedef MatrixConstReference<T, Rows, Cols> expr_type; + + return XprMatrix<expr_type, Rows, Cols>(expr_type(mem)); +} + + +} // namespace tvmet + +#endif // TVMET_MATRIX_FUNCTIONS_H + +// Local Variables: +// mode:C++ +// tab-width:8 +// End: