petsc-3.10.5 2019-03-28
DMPlexPointGlobalRef
return read/write access to a point in global array
Synopsis
#include "petscdmplex.h"
PetscErrorCode DMPlexPointGlobalRef(DM dm,PetscInt point,PetscScalar *array,void *ptr)
Not Collective
Input Arguments
| dm | - DM defining topological space
|
| point | - topological point
|
| array | - array to index into
|
Output Arguments
ptr -address of reference to point data, type generic so user can place in structure; returns NULL if global point is not owned
Note
A common usage when data sizes are known statically
struct { PetscScalar foo,bar,baz; } *ptr;
DMPlexPointGlobalRef(dm,point,array,&ptr);
ptr->foo = 2; ptr->bar = 3; ptr->baz = 5;
See Also
DMGetSection(), PetscSectionGetOffset(), PetscSectionGetDof(), DMPlexGetPointGlobal(), DMPlexPointLocalRef(), DMPlexPointGlobalRead()
Level
intermediate
Location
src/dm/impls/plex/plexpoint.c
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages