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// $Id$ |
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/* |
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Copyright (C) 2022 Peter Johansson |
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This file is part of the yat library, https://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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You should have received a copy of the GNU General Public License |
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along with yat. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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#include <config.h> |
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#include "MatrixView.h" |
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#include "BasicMatrix.h" |
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#include <cassert> |
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namespace theplu { |
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namespace yat { |
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namespace utility { |
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MatrixView::MatrixView(void) |
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: view_(nullptr) |
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{ |
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} |
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MatrixView::MatrixView(MatrixView& other) |
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: view_(nullptr) |
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{ |
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copy(other.gsl_matrix_p()); |
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} |
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MatrixView::MatrixView(MatrixMutable& other) |
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: view_(nullptr) |
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{ |
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copy(other.gsl_matrix_p()); |
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} |
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MatrixView::MatrixView(MatrixMutable& other, |
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size_t row_offset, size_t col_offset, |
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size_t rows, size_t columns) |
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: view_(nullptr) |
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{ |
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copy(other.gsl_matrix_p(), row_offset, col_offset, rows, columns); |
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} |
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MatrixView::MatrixView(gsl_matrix* m) |
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{ |
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assert(0); |
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} |
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MatrixView::MatrixView(double* p, size_t rows, size_t cols) |
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{ |
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assert(0); |
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} |
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MatrixView::MatrixView(double* p, size_t rows, size_t cols, size_t tda) |
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{ |
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assert(0); |
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} |
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MatrixView::~MatrixView(void) |
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{ |
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delete view_; |
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view_ = nullptr; |
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} |
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MatrixView& MatrixView::operator=(const MatrixView& other) |
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{ |
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copy_assign(other); |
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return *this; |
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} |
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void MatrixView::copy(gsl_matrix* other) |
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{ |
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copy(other, 0, 0, detail::rows(other), detail::columns(other)); |
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} |
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void MatrixView::copy(gsl_matrix* other, size_t k1, size_t k2, |
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size_t n1, size_t n2) |
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{ |
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assert(!view_ && "should only be called in constructors"); |
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if (other) { |
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view_ = |
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new gsl_matrix_view(gsl_matrix_submatrix(other, k1, k2, n1, n2)); |
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assert(view_); |
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} |
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} |
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void MatrixView::copy_assign(const gsl_matrix* rhs) |
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{ |
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if (rhs) { |
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assert(gsl_matrix_p()); // dimension mismatch |
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if (detail::overlap(gsl_matrix_p(), rhs)) { |
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detail::copy(blas_result_, rhs); |
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detail::assign(gsl_matrix_p(), blas_result_); |
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} |
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else |
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detail::assign(gsl_matrix_p(), rhs); |
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} |
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} |
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gsl_matrix* MatrixView::gsl_matrix_p(void) |
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{ |
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if (view_) |
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return &view_->matrix; |
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return nullptr; |
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} |
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const gsl_matrix* MatrixView::gsl_matrix_p(void) const |
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{ |
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if (view_) |
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return &view_->matrix; |
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return nullptr; |
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} |
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void MatrixView::move_assign(MatrixMutable&& rhs) |
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{ |
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copy_assign(rhs); |
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} |
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void MatrixView::move_assign(gsl_matrix*&& rhs) |
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{ |
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copy_assign(rhs); |
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} |
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MatrixView::MatrixView(MatrixView::proxy p) |
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: view_(nullptr) |
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{ |
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std::swap(view_, p.view_); |
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} |
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MatrixView::operator proxy() |
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{ |
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return proxy(std::move(view_)); |
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} |
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MatrixView::proxy::proxy(gsl_matrix_view*&& v) |
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: view_(nullptr) |
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{ |
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std::swap(view_, v); |
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} |
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}}} // of namespace utility, yat and thep |