409a1b21b8
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@2713 331e1502-861f-0410-8da2-ba01fb791d7f
45 lines
1,002 B
C++
45 lines
1,002 B
C++
#ifndef MATRICES_H
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#define MATRICES_H
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#include <vector>
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/** @ingroup Utilities
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*/
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class lower_triangular_matrix {
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unsigned n;
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std::vector<double> data;
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public:
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lower_triangular_matrix(unsigned n_ = 0) : n(n_), data(n * (n+1) / 2) {};
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void resize(unsigned n_) {
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n = n_;
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data.resize(n*(n+1)/2);
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}
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std::vector<double>::iterator operator[](unsigned i) { return data.begin() + i * (i+1) / 2; }
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std::vector<double>::const_iterator operator[](unsigned i) const { return data.begin() + i*(i+1)/2; }
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};
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/** @ingroup Utilities
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*/
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class square_matrix {
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unsigned n;
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std::vector<double> data;
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public:
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square_matrix(unsigned n_ = 0) : n(n_), data(n * n) {};
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void resize(unsigned n_) {
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n = n_;
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data.resize(n*n);
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}
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std::vector<double>::iterator operator[](unsigned i) { return data.begin() + i * n; }
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std::vector<double>::const_iterator operator[](unsigned i) const { return data.begin() + i*n; }
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};
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#endif
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