Re: [Boost-users] Question regarding ublas::identity_matrix

I see, thank you very much! "Chris Weed" ??????:359e4bf50610131233j6ed7feet897c5fe03e60ca12@mail.gmail.com...

This is probably so all the matrix classes have the same interface.

This would allow functions on matrices to work generically for rect_matrix and identity_matrix.

template<typename MatrixType> size_t num_elements(MatrixType m) { return m.size1()*m.size2(); }

identity_matrix i; rectangular_matrix r; std::cout << num_elements(i) << std::endl; std::cout << num_elements(r) << std::endl;

Chris

On 10/13/06, YYW wrote:

...

Hi all, I'm a newcomer to uBlas. Please consider the following code:

identity_matrix<double> matI(3); int row = matI.size1(); int col = matI.size2();

now that matI has the same number of rows and columns, why the identity_matrix template class has two "size" member functions: size1() and size2()? And has two "size" member variables: size1_ and size2_? Why not use just size() and size_?

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