PetscSectionGetFieldPointOffset#

Return the offset for the first field dof associated with the given point relative to the offset for that point for the unnamed default field’s first dof

Synopsis#

#include "petscsection.h"   
PetscErrorCode PetscSectionGetFieldPointOffset(PetscSection s, PetscInt point, PetscInt field, PetscInt *offset)

Not Collective

Input Parameters#

s - the PetscSection
point - the point
field - the field

Output Parameter#

offset - the offset

Note#

This ignores constraints

Example#

  if PetscSectionSetPointMajor(s,PETSC_TRUE)
  The unnamed default field has 3 dof at `point`
  Field 0 has 2 dof at `point`
  Then PetscSectionGetFieldPointOffset(s,point,1,&offset) returns and offset of 5