User_function     248 ompi/mpi/cxx/intercepts.cc     MPI::User_function *cxx_callback = (MPI::User_function*) c_fn;
User_function      47 ompi/mpi/cxx/op.h   virtual void Init(User_function *func, bool commute);
User_function     119 ompi/mpi/cxx/op_inln.h MPI::Op::Init(MPI::User_function *func, bool commute)