Hello, I am developing a poisson solver based on the example code
petsc-3.4.0/src/ksp/ksp/examples/tutorials/ex45.c.
I have a question on utilizing functions
KSPSetComputeRHS (KSP ksp,PetscErrorCode (*func)(KSP,Vec,void*),void *ctx) and
ComputeRHS(KSP,Vec,void*) which is the (*func)(KSP,Vec,void*) in the interface.
Since I have source term generated on the right hand side of Poisson equation
and they are computed outside KSPSetComputeRHS() and ComputeRHS(), an array of
source term variables must be passed into ComuteRHS() function. From the manual
online, it seems the interface of ComputeRHS is only for passing variables from
inside of ComputeRHS to KSPSetComputeRHS. There is not a dummy for passing into
ComputeRHS. Can anybody give me suggestions on it? Thanks in advance.
