[petsc-users] pass a member function to MatShellSetOperation

Hi: I want to have the shell matrix-vector multiplication written as a class member function and pass it to the shell matrix via MatShellSetOperation. MatShellSetOperation(A, MATOP_MULT, (void (*)(void))(&Global_Assem::MyMatMult)); Perhaps I have a wrong understanding of function pointers, and I am constantly getting warnings that say I cannot convert a member function to a void type. The warning indeed makes sense to me, as the function pointer passed in the above manner is independent of an instance. Perhaps there are other ways of passing a member function that I don't know of. If you know how to address this, I would appreciate it a lot! Thanks, Mike