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6d749c172a
The size_t type means a number of _bytes_, and it was misused as counting e.g. the number of rows/columns in a matrix. Moreover, it is unsigned, which can give strange bugs if a signed/unsigned mismatch occurs.
99 lines
2.5 KiB
C++
99 lines
2.5 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: UnOperator.h,v 1.13 2003/11/30 18:35:17 opetzold Exp $
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*/
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#ifndef TVMET_XPR_UNOPERATOR_H
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#define TVMET_XPR_UNOPERATOR_H
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namespace tvmet {
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/**
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* \class XprUnOp UnOperator.h "tvmet/xpr/UnOperator.h"
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* \brief Unary operator working on one subexpression.
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*
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* Using the access operator() the unary operation will be evaluated.
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*/
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template<class UnOp, class E>
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class XprUnOp
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: public TvmetBase< XprUnOp<UnOp, E> >
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{
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XprUnOp();
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XprUnOp& operator=(const XprUnOp&);
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public:
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typedef typename UnOp::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 = 1 * ops_expr
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};
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public:
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/** Constructor for an expressions. */
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explicit XprUnOp(const E& e)
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: m_expr(e)
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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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XprUnOp(const XprUnOp& e)
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: m_expr(e.m_expr)
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{ }
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#endif
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/** Index operator, evaluates the expression inside. */
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value_type operator()(int i) const {
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return UnOp::apply_on(m_expr(i));
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}
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/** index operator for arrays/matrices. */
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value_type operator()(int i, int j) const {
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return UnOp::apply_on(m_expr(i, j));
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}
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public: // debugging Xpr parse tree
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void print_xpr(std::ostream& os, int l=0) const {
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os << IndentLevel(l++)
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<< "XprUnOp[O="<< ops << ", (O=" << ops_expr << ")]<"
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<< std::endl;
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UnOp::print_xpr(os, l);
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m_expr.print_xpr(os, l);
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os << IndentLevel(--l)
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<< ">," << std::endl;
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}
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private:
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const E m_expr;
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};
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} // namespace tvmet
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#endif // TVMET_XPR_UNOPERATOR_H
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// Local Variables:
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// mode:C++
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// End:
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