930 PetscErrorCode DMSwarmGetVelocityFunction(DM sw, PetscSimplePointFn **velFunc)  in DMSwarmGetVelocityFunction()  argument
936   PetscAssertPointer(velFunc, 2);  in DMSwarmGetVelocityFunction()
937   *velFunc = swarm->velFunc;  in DMSwarmGetVelocityFunction()
954 PetscErrorCode DMSwarmSetVelocityFunction(DM sw, PetscSimplePointFn *velFunc)  in DMSwarmSetVelocityFunction()  argument
960   PetscValidFunction(velFunc, 2);  in DMSwarmSetVelocityFunction()
961   swarm->velFunc = velFunc;  in DMSwarmSetVelocityFunction()
1215   PetscSimplePointFn *velFunc;  in DMSwarmInitializeVelocities()  local
1222   PetscCall(DMSwarmGetVelocityFunction(sw, &velFunc));  in DMSwarmInitializeVelocities()
1230   } else if (velFunc) {  in DMSwarmInitializeVelocities()
1236       PetscCall((*velFunc)(dim, 0., NULL, p, vel, ctx));  in DMSwarmInitializeVelocities()
1287     PetscSimplePointFn *velFunc;  in DMSwarmInitializeVelocitiesFromOptions()  local
1289     PetscCall(PetscDLSym(NULL, funcname, (void **)&velFunc));  in DMSwarmInitializeVelocitiesFromOptions()
1290 …PetscCheck(velFunc, PetscObjectComm((PetscObject)sw), PETSC_ERR_ARG_WRONG, "Could not locate funct…  in DMSwarmInitializeVelocitiesFromOptions()
1291     PetscCall(DMSwarmSetVelocityFunction(sw, velFunc));  in DMSwarmInitializeVelocitiesFromOptions()