petsc-master 2019-04-16
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Set the callback used to compute patch matrices


#include "petscpc.h" 
PetscErrorCode PCPatchSetComputeOperator(PC pc, PetscErrorCode (*func)(PC, PetscInt, Vec, Mat, IS, PetscInt, const PetscInt *, const PetscInt *, void *), void *ctx)
Logically collective on PC

Input Parameters

pc - The PC
func - The callback
ctx - The user context

Calling sequence of func

  func (PC pc,PetscInt point,Vec x,Mat mat,IS facetIS,PetscInt n,const PetscInt* dofsArray,const PetscInt* dofsArrayWithAll,void* ctx)

pc - The PC
point - The point
x - The input solution (not used in linear problems)
mat - The patch matrix
cellIS - An array of the cell numbers
n - The size of dofsArray
dofsArray - The dofmap for the dofs to be solved for
dofsArrayWithAll - The dofmap for all dofs on the patch
ctx - The user context


The matrix entries have been set to zero before the call.

See Also

PCPatchGetComputeOperator(), PCPatchSetComputeFunction(), PCPatchSetDiscretisationInfo()




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