PETSc version v3.15.4-845-g6762c1643e
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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 Parameter

sf - star forest to invert

Output Parameter

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

Examples

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

Index of all PetscSF routines
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Index of all manual pages