PfaffianComputation()

PfaffianComputation::PfaffianComputation	(	const Matrix *	M,
		int	p )

Definition at line 7 of file pfaff.cpp.

    : R(M0->get_ring()), M(M0), p(p0), done(false), row_set(nullptr)
{
  pfaffs = MatrixConstructor(R->make_FreeModule(1), 0);
  if (p == 0)
    {
      pfaffs.append(R->make_vec(0, R->one()));
      done = true;
      return;
    }
  if (p % 2 != 0 || p < 0 || (p > M->n_cols()) || (p > M->n_rows()))
    {
      done = true;
      return;
    }
  row_set = newarray_atomic(size_t, p);
  for (int i = 0; i < p; i++) row_set[i] = i;
}

References done, get_ring(), M, Matrix, newarray_atomic, p, pfaffs, R, and row_set.