48   Vec               right, left, perm;  in main()  local
90   PetscCall(MatCreateVecs(A, &right, &left));  in main()
92   PetscCall(MatMult(A, right, left));  in main()
95   PetscCall(VecDuplicate(left, &perm));  in main()
96   PetscCall(VecCopy(left, perm));  in main()
100   PetscCall(MatMult(A, right, left));  in main()
101   PetscCall(VecAXPY(left, -1.0, perm));  in main()
102   PetscCall(VecNorm(left, NORM_INFINITY, &norm));  in main()
106   PetscCall(VecDestroy(&left));  in main()
208       PetscCall(MatCreateVecs(R, &right, &left));  in main()
210       PetscCall(MatMult(R, right, left));  in main()
213       PetscCall(VecDuplicate(left, &perm));  in main()
214       PetscCall(VecCopy(left, perm));  in main()
218       PetscCall(MatMult(R, right, left));  in main()
219       PetscCall(VecAXPY(left, -1.0, perm));  in main()
220       PetscCall(VecNorm(left, NORM_INFINITY, &norm));  in main()
224       PetscCall(VecDestroy(&left));  in main()