IM2_Matrix_get_entry()

const RingElement * IM2_Matrix_get_entry	(	const Matrix *	M,
		int	r,
		int	c )

Definition at line 55 of file matrix.cpp.

{
  try
    {
      if (r < 0 || r >= M->n_rows())
        {
          ERROR("matrix row index %d out of range 0 .. %d", r, M->n_rows() - 1);
          return nullptr;
        }
      if (c < 0 || c >= M->n_cols())
        {
          ERROR("matrix column index %d out of range 0 .. %d",
                c,
                M->n_cols() - 1);
          return nullptr;
        }
      ring_elem result;
      result = M->elem(r, c);
      return RingElement::make_raw(M->get_ring(), result);
  } catch (const exc::engine_error& e)
    {
      ERROR(e.what());
      return nullptr;
  }
}

References Matrix::elem(), ERROR, Matrix::get_ring(), RingElement::make_raw(), Matrix, Matrix::n_cols(), Matrix::n_rows(), and result().