36   AppCtx      appctx; /* user-defined application context */  in main()  local
50   appctx.a = -1.0;  in main()
51   PetscCall(PetscOptionsGetReal(NULL, NULL, "-a", &appctx.a, NULL));  in main()
68     PetscCall(TSSetIFunction(ts, NULL, IFunction_LaxWendroff, &appctx));  in main()
71     PetscCall(TSSetIFunction(ts, NULL, IFunction_LaxFriedrichs, &appctx));  in main()
76   dt = 1.0 / (PetscAbsReal(appctx.a) * M);  in main()
85   PetscCall(InitialConditions(ts, U, &appctx));  in main()
88 …Call(TSSetSolutionFunction(ts, (PetscErrorCode (*)(TS, PetscReal, Vec, void *))Solution, &appctx));  in main()
112 PetscErrorCode InitialConditions(TS ts, Vec U, AppCtx *appctx)  in InitialConditions()  argument
160 PetscErrorCode Solution(TS ts, PetscReal t, Vec U, AppCtx *appctx)  in Solution()  argument
163   PetscReal    a = appctx->a, h, PI6, PI2;  in Solution()
195   AppCtx      *appctx = (AppCtx *)ctx;  in IFunction_LaxFriedrichs()  local
223   c = appctx->a * dt / h; /* Courant-Friedrichs-Lewy number (CFL number) */  in IFunction_LaxFriedrichs()
243   AppCtx      *appctx = (AppCtx *)ctx;  in IFunction_LaxWendroff()  local
272   a      = appctx->a;  in IFunction_LaxWendroff()