petsc-3.10.5 2019-03-28
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DMPlexPointLocalRef

 return read/write access to a point in local array

Synopsis

#include "petscdmplex.h"   
PetscErrorCode DMPlexPointLocalRef(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

Note

A common usage when data sizes are known statically

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

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

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

See Also

DMGetSection(), PetscSectionGetOffset(), PetscSectionGetDof(), DMPlexGetPointLocal(), DMPlexPointGlobalRef()

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