rawLUincremental()

M2_arrayintOrNull rawLUincremental	(	M2_arrayintOrNull	P,
		MutableMatrix *	LU,
		const MutableMatrix *	v,
		int	m )

Hi, this is rawLUincremental.

Returns the permutation array: we need to be more precise which one. Given (first m columns of PLU = first m columns of A (not given), and given the (m+1)-st column of A, then returns a Q, modified from P, and changes LU (which encodes L and U) s.t. (first (m+1) columns of QLU = first (m+1) columns of A (not given) Note: LU encodes L and U in the usual manner: lower triangular part is L, diagonal of L is all ones, and U is the upper triangular part.

Definition at line 667 of file mutable-matrix.cpp.

{
  try
    {
      // FIXME: can we not allocate new permutation array?
      std::vector<size_t> perm = M2_arrayint_to_stdvector<size_t>(P);
      return LU->LUincremental(perm, v, i);
  } catch (const exc::engine_error& e)
    {
      ERROR(e.what());
      return nullptr;
  }
}

References ERROR, and M2_arrayint_to_stdvector().