petsc-3.10.5 2019-03-28
DMPlexPointLocalRead
return read access to a point in local array
Synopsis
#include "petscdmplex.h"
PetscErrorCode DMPlexPointLocalRead(DM dm,PetscInt point,const 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 read reference to point data, type generic so user can place in structure
Note
A common usage when data sizes are known statically
const struct { PetscScalar foo,bar,baz; } *ptr;
DMPlexPointLocalRead(dm,point,array,&ptr);
x = 2*ptr->foo + 3*ptr->bar + 5*ptr->baz;
See Also
DMGetSection(), PetscSectionGetOffset(), PetscSectionGetDof(), DMPlexGetPointLocal(), DMPlexPointGlobalRead()
Level
intermediate
Location
src/dm/impls/plex/plexpoint.c
Examples
src/ts/examples/tutorials/ex11.c.html
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages