Function matrix_swap (o2scl) ============================ :ref:`O2scl ` : :ref:`Function List` .. doxygenfunction:: o2scl::matrix_swap(size_t M, size_t N, mat_t &v1, mat2_t &v2) .. doxygenfunction:: o2scl::matrix_swap(mat_t &m, size_t i1, size_t j1, size_t i2, size_t j2)