petsc-3.8.4 2018-03-24

DMPlexGetTreeChildren

get the children of a point in the tree describing the point hierarchy (not the DAG)

#include "petscdmplex.h"   
PetscErrorCode DMPlexGetTreeChildren(DM dm, PetscInt point, PetscInt *numChildren, const PetscInt *children[])

	dm	- the DMPlex object
	point	- the query point

	numChildren	- if not NULL, set to the number of children
	children	- if not NULL, set to a list children, or set to NULL if the point has no children

Since it returns an array, this routine is only available in Fortran 90, and you must include petsc.h90 in your code.