8   Vec           xx, s1, s2, yy;  in main()  local
29   PetscCall(VecCreateSeq(PETSC_COMM_SELF, M, &xx));  in main()
30   PetscCall(VecDuplicate(xx, &s1));  in main()
31   PetscCall(VecDuplicate(xx, &s2));  in main()
32   PetscCall(VecDuplicate(xx, &yy));  in main()
108     PetscCall(VecSetRandom(xx, rdm));  in main()
110     PetscCall(MatMult(A, xx, s1));  in main()
111     PetscCall(MatMultAdd(A, xx, s2, s2));  in main()
167     PetscCall(MatForwardSolve(Fact, yy, xx));  in main()
168     PetscCall(MatBackwardSolve(Fact, xx, s1));  in main()
181     PetscCall(VecSetRandom(xx, rdm));  in main()
183     PetscCall(MatSolveAdd(B, xx, yy, s2));  in main()
184     PetscCall(MatSolveAdd(A, xx, yy, s1));  in main()
193     PetscCall(VecSetRandom(xx, rdm));  in main()
196     PetscCall(MatSolveAdd(B, xx, s2, s2));  in main()
197     PetscCall(MatSolveAdd(A, xx, s1, s1));  in main()
206     PetscCall(VecSetRandom(xx, rdm));  in main()
207     PetscCall(MatSolve(B, xx, s2));  in main()
208     PetscCall(MatSolve(A, xx, s1));  in main()
218       PetscCall(VecSetRandom(xx, rdm));  in main()
219       PetscCall(MatSolveTranspose(B, xx, s2));  in main()
220       PetscCall(MatSolveTranspose(A, xx, s1));  in main()
232   PetscCall(VecDestroy(&xx));  in main()