is_valid_partition()

bool SchurRing2::is_valid_partition	(	M2_arrayint	part,
		bool	set_error = true ) const

Definition at line 157 of file schur2.cpp.

{
  if (nvars >= 0 && part->len > nvars)
    {
      if (set_error) ERROR("expected a partition of size at most %d\n", nvars);
      return false;
    }
  for (int i = 1; i < part->len; i++)
    if (part->array[i - 1] < part->array[i])
      {
        if (set_error) ERROR("expected a non-increasing sequence of integers");
        return false;
      }
  if (part->len > 0 && part->array[part->len - 1] < 0)
    {
      if (set_error) ERROR("expected nonnegative integers only");
      return false;
    }
  return true;
}

References ERROR, and nvars.

Referenced by rawSchurFromPartition().