PETSc version 3.15.5
PCHYPRESetDiscreteGradient
Set discrete gradient matrix 
Synopsis
#include "petscpc.h" 
PetscErrorCode PCHYPRESetDiscreteGradient(PC pc, Mat G)
Collective on PC
Input Parameters
|  | pc | - the preconditioning context | 
|  | G | - the discrete gradient | 
Notes
G should have as many rows as the number of edges and as many columns as the number of vertices in the mesh
Each row of G has 2 nonzeros, with column indexes being the global indexes of edge's endpoints: matrix entries are +1 and -1 depending on edge orientation
See Also
Level
intermediate
Location
src/ksp/pc/impls/hypre/hypre.c
Implementations
PCHYPRESetDiscreteGradient_HYPRE in src/ksp/pc/impls/hypre/hypre.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages