53   Vec          Ydot;         /* Work vector holding Ydot during residual evaluation */  member
1134   Vec             *Y = ros->Y, Ydot = ros->Ydot, Zdot = ros->Zdot, Zstage = ros->Zstage;  in TSStep_RosW()  local
1187         PetscCall(VecZeroEntries(Ydot)); /* Evaluate Y[i]=G(t,Ydot=0,Zstage) */  in TSStep_RosW()
1188         PetscCall(TSComputeIFunction(ts, ros->stage_time, Zstage, Ydot, Y[i], PETSC_FALSE));  in TSStep_RosW()
1198 …      PetscCall(TSComputeIJacobian(ts, ros->stage_time, ts->vec_sol, Ydot, 0, J, Jp, PETSC_FALSE));  in TSStep_RosW()
1308   PetscCall(VecDestroy(&ros->Ydot));  in TSReset_RosW()
1316 static PetscErrorCode TSRosWGetVecs(TS ts, DM dm, Vec *Ydot, Vec *Zdot, Vec *Ystage, Vec *Zstage)  in TSRosWGetVecs()  argument
1321   if (Ydot) {  in TSRosWGetVecs()
1322     if (dm && dm != ts->dm) PetscCall(DMGetNamedGlobalVector(dm, "TSRosW_Ydot", Ydot));  in TSRosWGetVecs()
1323     else *Ydot = rw->Ydot;  in TSRosWGetVecs()
1340 static PetscErrorCode TSRosWRestoreVecs(TS ts, DM dm, Vec *Ydot, Vec *Zdot, Vec *Ystage, Vec *Zstag…  in TSRosWRestoreVecs()  argument
1343   if (Ydot) {  in TSRosWRestoreVecs()
1344     if (dm && dm != ts->dm) PetscCall(DMRestoreNamedGlobalVector(dm, "TSRosW_Ydot", Ydot));  in TSRosWRestoreVecs()
1367   Vec Ydot, Zdot, Ystage, Zstage;  in DMRestrictHook_TSRosW()  local
1371   PetscCall(TSRosWGetVecs(ts, fine, &Ydot, &Ystage, &Zdot, &Zstage));  in DMRestrictHook_TSRosW()
1373   PetscCall(MatRestrict(restrct, Ydot, Ydotc));  in DMRestrictHook_TSRosW()
1381   PetscCall(TSRosWRestoreVecs(ts, fine, &Ydot, &Ystage, &Zdot, &Zstage));  in DMRestrictHook_TSRosW()
1395   Vec Ydot, Zdot, Ystage, Zstage;  in DMSubDomainRestrictHook_TSRosW()  local
1399   PetscCall(TSRosWGetVecs(ts, dm, &Ydot, &Ystage, &Zdot, &Zstage));  in DMSubDomainRestrictHook_TSRosW()
1402   PetscCall(VecScatterBegin(gscat, Ydot, Ydots, INSERT_VALUES, SCATTER_FORWARD));  in DMSubDomainRestrictHook_TSRosW()
1403   PetscCall(VecScatterEnd(gscat, Ydot, Ydots, INSERT_VALUES, SCATTER_FORWARD));  in DMSubDomainRestrictHook_TSRosW()
1414   PetscCall(TSRosWRestoreVecs(ts, dm, &Ydot, &Ystage, &Zdot, &Zstage));  in DMSubDomainRestrictHook_TSRosW()
1422   Vec       Ydot, Zdot, Ystage, Zstage;  in SNESTSFormFunction_RosW()  local
1428   PetscCall(TSRosWGetVecs(ts, dm, &Ydot, &Zdot, &Ystage, &Zstage));  in SNESTSFormFunction_RosW()
1429   PetscCall(VecWAXPY(Ydot, shift, U, Zdot));   /* Ydot = shift*U + Zdot */  in SNESTSFormFunction_RosW()
1433   PetscCall(TSComputeIFunction(ts, ros->stage_time, Ystage, Ydot, F, PETSC_FALSE));  in SNESTSFormFunction_RosW()
1435   PetscCall(TSRosWRestoreVecs(ts, dm, &Ydot, &Zdot, &Ystage, &Zstage));  in SNESTSFormFunction_RosW()
1442   Vec       Ydot, Zdot, Ystage, Zstage;  in SNESTSFormJacobian_RosW()  local
1449   PetscCall(TSRosWGetVecs(ts, dm, &Ydot, &Zdot, &Ystage, &Zstage));  in SNESTSFormJacobian_RosW()
1452   PetscCall(TSComputeIJacobian(ts, ros->stage_time, Ystage, Ydot, shift, A, B, PETSC_TRUE));  in SNESTSFormJacobian_RosW()
1454   PetscCall(TSRosWRestoreVecs(ts, dm, &Ydot, &Zdot, &Ystage, &Zstage));  in SNESTSFormJacobian_RosW()
1478   PetscCall(VecDuplicate(ts->vec_sol, &ros->Ydot));  in TSSetUp_RosW()