remake() [1/2]

const Matrix * Matrix::remake

(

const FreeModule *

target

)

const

Definition at line 260 of file matrix.cpp.

{
  if (n_rows() != target->rank())
    {
      ERROR("wrong number of rows");
      return nullptr;
    }
  const Ring *R = get_ring();
  if (R != target->get_ring())
    {
      ERROR("expected same ring");
      return nullptr;
    }
 
  MatrixConstructor mat(target, n_cols());
  for (int i = 0; i < n_cols(); i++)
    mat.set_column(i, R->copy_vec(mEntries[i]));
  mat.compute_column_degrees();
  return mat.to_matrix();
}

References MatrixConstructor::compute_column_degrees(), Ring::copy_vec(), ERROR, FreeModule, FreeModule::get_ring(), get_ring(), Matrix(), MatrixConstructor, mEntries, n_cols(), n_rows(), FreeModule::rank(), remake(), MatrixConstructor::set_column(), and MatrixConstructor::to_matrix().