134 lines
4.7 KiB
C++
134 lines
4.7 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra. Eigen itself is part of the KDE project.
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//
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// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
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//
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// Eigen 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 2 or (at your option) any later version.
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//
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// Eigen 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 along
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// with Eigen; if not, write to the Free Software Foundation, Inc., 51
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// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. This exception does not invalidate any other reasons why a work
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// based on this file might be covered by the GNU General Public License.
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#ifndef EI_EIGENBASE_H
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#define EI_EIGENBASE_H
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#include "Util.h"
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template<typename _Scalar, typename _Derived> class EiObject
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{
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static const int RowsAtCompileTime = _Derived::RowsAtCompileTime,
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ColsAtCompileTime = _Derived::ColsAtCompileTime;
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public:
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typedef typename EiForwardDecl<_Derived>::Ref Ref;
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typedef _Scalar Scalar;
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typedef _Derived Derived;
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int rows() const { return static_cast<const Derived *>(this)->_rows(); }
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int cols() const { return static_cast<const Derived *>(this)->_cols(); }
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int size() const { return rows() * cols(); }
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Ref ref()
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{ return static_cast<Derived *>(this)->_ref(); }
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Ref ref() const
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{ return static_cast<const Derived *>(this)->_ref(); }
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Scalar& write(int row, int col)
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{
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return static_cast<Derived *>(this)->_write(row, col);
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}
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Scalar read(int row, int col) const
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{
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return static_cast<const Derived *>(this)->_read(row, col);
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}
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template<typename OtherDerived>
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Derived& operator=(const EiObject<Scalar, OtherDerived>& other)
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{
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assert(rows() == other.rows() && cols() == other.cols());
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for(int i = 0; i < rows(); i++)
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for(int j = 0; j < cols(); j++)
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write(i, j) = other.read(i, j);
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return *static_cast<Derived*>(this);
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}
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//special case of the above template operator=. Strangely, g++ 4.1 failed to use
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//that template when OtherDerived == Derived
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Derived& operator=(const EiObject& other)
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{
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assert(rows() == other.rows() && cols() == other.cols());
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for(int i = 0; i < rows(); i++)
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for(int j = 0; j < cols(); j++)
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write(i, j) = other.read(i, j);
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return *static_cast<Derived*>(this);
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}
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EiRow<EiObject> row(int i);
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EiColumn<EiObject> col(int i);
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EiMinor<EiObject> minor(int row, int col);
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EiBlock<EiObject>
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block(int startRow, int endRow, int startCol= 0, int endCol = 0);
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template<typename OtherDerived>
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Derived& operator+=(const EiObject<Scalar, OtherDerived>& other);
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template<typename OtherDerived>
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Derived& operator-=(const EiObject<Scalar, OtherDerived>& other);
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template<typename OtherDerived>
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Derived& operator*=(const EiObject<Scalar, OtherDerived>& other);
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Derived& operator*=(const int& other);
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Derived& operator*=(const float& other);
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Derived& operator*=(const double& other);
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Derived& operator*=(const std::complex<int>& other);
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Derived& operator*=(const std::complex<float>& other);
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Derived& operator*=(const std::complex<double>& other);
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Derived& operator/=(const int& other);
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Derived& operator/=(const float& other);
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Derived& operator/=(const double& other);
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Derived& operator/=(const std::complex<int>& other);
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Derived& operator/=(const std::complex<float>& other);
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Derived& operator/=(const std::complex<double>& other);
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Scalar operator()(int row, int col = 0) const
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{ return read(row, col); }
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Scalar& operator()(int row, int col = 0)
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{ return write(row, col); }
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EiEval<EiObject> eval() const;
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};
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template<typename Scalar, typename Derived>
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std::ostream & operator <<
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( std::ostream & s,
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const EiObject<Scalar, Derived> & m )
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{
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for( int i = 0; i < m.rows(); i++ )
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{
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s << m( i, 0 );
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for (int j = 1; j < m.cols(); j++ )
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s << " " << m( i, j );
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if( i < m.rows() - 1)
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s << std::endl;
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}
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return s;
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}
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#endif // EI_EIGENBASE_H
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