8   Vec           xx, s1, s2, yy;  in main()  local
31   PetscCall(VecDuplicate(xx, &s2));  in main()
109     PetscCall(VecSet(s2, 0.0));  in main()
111     PetscCall(MatMultAdd(A, xx, s2, s2));  in main()
113     PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
183     PetscCall(MatSolveAdd(B, xx, yy, s2));  in main()
186     PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
195     PetscCall(VecCopy(s2, s1));  in main()
196     PetscCall(MatSolveAdd(B, xx, s2, s2));  in main()
199     PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
207     PetscCall(MatSolve(B, xx, s2));  in main()
210     PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
219       PetscCall(MatSolveTranspose(B, xx, s2));  in main()
222       PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
234   PetscCall(VecDestroy(&s2));  in main()