Function to_eigen

test/src/sparse_factorization.cpp:12–17

template<typename T, typename I>
auto
to_eigen(proxsuite::linalg::sparse::MatRef<T, I> a) noexcept
  -> Eigen::Matrix<T, -1, -1>
{
  return a.to_eigen();
}

template<typename T, typename I>
auto