petsc-3.13.6 2020-09-29

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DMCreateMassMatrix

Gets mass matrix between two DM objects, M_ij = \int \phi_i \psi_j

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMCreateMassMatrix(DM dac, DM daf, Mat *mat)

Collective on dac

Input Parameter

	dac	- the DM object
	daf	- the second, finer DM object

Output Parameter

mat -the interpolation

See Also

DMCreateMatrix(), DMRefine(), DMCoarsen(), DMCreateRestriction(), DMCreateInterpolation(), DMCreateInjection()

Level

developer

Location

src/dm/interface/dm.c

Implementations

DMCreateMassMatrix_Plex in src/dm/impls/plex/plex.c
DMCreateMassMatrix_Swarm in src/dm/impls/swarm/swarm.c

Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages