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Diffstat (limited to 'Eigen/Core/Ones.h')
-rw-r--r-- | Eigen/Core/Ones.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/Eigen/Core/Ones.h b/Eigen/Core/Ones.h new file mode 100644 index 000000000..76a3665c6 --- /dev/null +++ b/Eigen/Core/Ones.h @@ -0,0 +1,78 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr> +// +// Eigen is free software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the Free Software +// Foundation; either version 2 or (at your option) any later version. +// +// Eigen 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 General Public License for more +// details. +// +// You should have received a copy of the GNU General Public License along +// with Eigen; if not, write to the Free Software Foundation, Inc., 51 +// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. This exception does not invalidate any other reasons why a work +// based on this file might be covered by the GNU General Public License. + +#ifndef EIGEN_ONES_H +#define EIGEN_ONES_H + +template<typename MatrixType> class Ones : NoOperatorEquals, + public MatrixBase<typename MatrixType::Scalar, Ones<MatrixType> > +{ + public: + typedef typename MatrixType::Scalar Scalar; + friend class MatrixBase<Scalar, Ones<MatrixType> >; + + Ones(int rows, int cols) : m_rows(rows), m_cols(cols) + { + assert(rows > 0 && cols > 0); + } + + private: + static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime, + _ColsAtCompileTime = MatrixType::ColsAtCompileTime; + + const Ones& _ref() const { return *this; } + int _rows() const { return m_rows; } + int _cols() const { return m_cols; } + + Scalar _coeff(int, int) const + { + return static_cast<Scalar>(1); + } + + protected: + int m_rows, m_cols; +}; + +template<typename Scalar, typename Derived> +const Ones<Derived> MatrixBase<Scalar, Derived>::ones(int rows, int cols) +{ + return Ones<Derived>(rows, cols); +} + +template<typename Scalar, typename Derived> +const Ones<Derived> MatrixBase<Scalar, Derived>::ones(int size) +{ + assert(IsVector); + if(RowsAtCompileTime == 1) return Ones<Derived>(1, size); + else return Ones<Derived>(size, 1); +} + +template<typename Scalar, typename Derived> +const Ones<Derived> MatrixBase<Scalar, Derived>::ones() +{ + return Ones<Derived>(RowsAtCompileTime, ColsAtCompileTime); +} + +#endif // EIGEN_ONES_H |