mirror of
https://gitlab.com/libeigen/eigen.git
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3036eeca0a
release of tvmet (inactive for 2 years and developer unreachable) as the basis for eigen2, because it provides seemingly good expression template mechanisms, we want that, and it would take years to reinvent that wheel. We'll see. So this commit imports the last tvmet release.
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/*
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* Tiny Vector Matrix Library
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* Dense Vector Matrix Libary of Tiny size using Expression Templates
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*
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* Copyright (C) 2001 - 2003 Olaf Petzold <opetzold@users.sourceforge.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* lesser General Public License for more details.
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*
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* You should have received a copy of the GNU lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* $Id: MatrixCol.h,v 1.15 2004/09/16 09:14:18 opetzold Exp $
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*/
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#ifndef TVMET_XPR_MATRIX_COL_H
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#define TVMET_XPR_MATRIX_COL_H
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namespace tvmet {
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/**
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* \class XprMatrixCol MatrixCol.h "tvmet/xpr/MatrixCol.h"
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* \brief Expression on matrix used for access on the column vector.
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*/
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template<class E, std::size_t Rows, std::size_t Cols>
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class XprMatrixCol
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: public TvmetBase< XprMatrixCol<E, Rows, Cols> >
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{
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XprMatrixCol();
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XprMatrixCol& operator=(const XprMatrixCol&);
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public:
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typedef typename E::value_type value_type;
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public:
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/** Complexity counter. */
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enum {
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ops_expr = E::ops,
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ops = ops_expr/Cols // equal Row accesses
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};
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public:
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/** Constructor. */
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explicit XprMatrixCol(const E& e, std::size_t no)
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: m_expr(e), m_col(no)
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{
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TVMET_RT_CONDITION(no < Cols, "XprMatrixCol Bounce Violation")
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}
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/** Copy Constructor. Not explicit! */
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#if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
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XprMatrixCol(const XprMatrixCol& e)
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: m_expr(e.m_expr), m_col(e.m_col)
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{ }
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#endif
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value_type operator()(std::size_t i) const {
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TVMET_RT_CONDITION(i < Rows, "XprMatrixCol Bounce Violation")
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return m_expr(i, m_col);
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}
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public: // debugging Xpr parse tree
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void print_xpr(std::ostream& os, std::size_t l=0) const {
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os << IndentLevel(l++)
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<< "XprMatrixCol[O=" << ops << ", (O=" << ops_expr << ")]<"
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<< std::endl;
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m_expr.print_xpr(os, l);
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os << IndentLevel(l)
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<< "R=" << Rows << ", C=" << Cols << std::endl
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<< IndentLevel(--l) << ">"
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<< ((l != 0) ? "," : "") << std::endl;
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}
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private:
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const E m_expr;
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const std::size_t m_col;
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};
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}
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#endif // TVMET_XPR_MATRIX_COL_H
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// Local Variables:
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// mode:C++
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// End:
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