petsc-dev 2014-04-16
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PetscSFCreateInverseSF

given a PetscSF in which all vertices have degree 1, creates the inverse map

Synopsis

#include "petscsf.h" 
PetscErrorCode PetscSFCreateInverseSF(PetscSF sf,PetscSF *isf)
Collective

Input Arguments

sf -star forest to invert

Output Arguments

isf -inverse of sf

Notes

All roots must have degree 1.

The local space may be a permutation, but cannot be sparse.

See Also

PetscSFSetGraph()

Level:advanced
Location:
src/vec/is/sf/interface/sf.c
Index of all PetscSF routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/vec/is/sf/examples/tutorials/ex1.c.html