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#ifndef _theplu_yat_utility_expression_matrix_binary |
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#define _theplu_yat_utility_expression_matrix_binary |
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// $Id$ |
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/* |
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Copyright (C) 2020 Peter Johansson |
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This file is part of the yat library, http://dev.thep.lu.se/yat |
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The yat library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License as |
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published by the Free Software Foundation; either version 3 of the |
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License, or (at your option) any later version. |
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The yat 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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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with yat. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "yat/utility/BasicMatrix.h" |
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#include "yat/utility/BLAS_utility.h" |
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#include "yat/utility/MatrixExpression.h" |
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#include "yat/utility/yat_assert.h" |
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|
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#include <gsl/gsl_matrix.h> |
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namespace theplu { |
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namespace yat { |
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namespace utility { |
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/// \cond IGNORE_DOXYGEN |
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namespace expression { |
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template<typename LHS, typename RHS, class OP> |
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class MatrixBinary |
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: public MatrixExpression<MatrixBinary<LHS, RHS, OP> > |
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{ |
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public: |
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MatrixBinary(const BasicMatrix<LHS>& lhs, const BasicMatrix<RHS>& rhs) |
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: lhs_(lhs), rhs_(rhs) |
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{ |
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} |
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size_t rows(void) const { return lhs_.rows(); } |
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size_t columns(void) const { return rhs_.columns(); } |
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|
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double operator()(size_t row, size_t column) const |
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{ return get(row, column, op_); } |
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|
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void calculate_matrix(gsl_matrix*& result) const |
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{ |
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detail::reallocate(result, this->rows(), this->columns()); |
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calculate_matrix(result, op_); |
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} |
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private: |
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const BasicMatrix<LHS>& lhs_; |
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const BasicMatrix<RHS>& rhs_; |
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OP op_; |
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template<class T> |
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void calculate_matrix(gsl_matrix*& result, T) const |
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{ |
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YAT_ASSERT(detail::rows(result) == this->rows()); |
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YAT_ASSERT(detail::columns(result) == this->columns()); |
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for (size_t i=0; i<rows(); ++i) |
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for (size_t j=0; j<columns(); ++j) |
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gsl_matrix_set(result, i, j, (*this)(i, j)); |
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} |
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double get(size_t row, size_t column, Plus) const |
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{ |
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return lhs_(row, column) + rhs_(row, column); |
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} |
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double get(size_t row, size_t column, Minus) const |
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{ |
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return lhs_(row, column) - rhs_(row, column); |
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} |
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}; |
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} // end namespace expression |
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/// \endcond |
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}}} // of namespace utility, yat, and theplu |
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#endif |