petsc-3.8.4 2018-03-24

DMPlexPointGlobalRef

return read/write access to a point in global array

#include "petscdmplex.h"   
PetscErrorCode DMPlexPointGlobalRef(DM dm,PetscInt point,PetscScalar *array,void *ptr)

Not Collective

	dm	- DM defining topological space
	point	- topological point
	array	- array to index into

ptr -address of reference to point data, type generic so user can place in structure; returns NULL if global point is not owned

 struct { PetscScalar foo,bar,baz; } *ptr;

 DMPlexPointGlobalRef(dm,point,array,&ptr);

 ptr->foo = 2; ptr->bar = 3; ptr->baz = 5;