33   Vec               v, x, y, Ax, Ay, Bx, By;  in main()  local
159   PetscCall(MatCreateVecs(A, &Ax, &Ay));  in main()
163   PetscCall(MatMult(A, Ax, Ay));  in main()
165   PetscCall(VecViewFromOptions(Ay, NULL, "-mult_vec_view"));  in main()
167   PetscCall(VecNorm(Ay, NORM_INFINITY, &nX));  in main()
168   PetscCall(VecAXPY(Ay, -1.0, By));  in main()
169   PetscCall(VecViewFromOptions(Ay, NULL, "-mult_vec_view"));  in main()
170   PetscCall(VecNorm(Ay, NORM_INFINITY, &err));  in main()
214     PetscCall(VecSetRandom(Ay, NULL));  in main()
215     PetscCall(VecCopy(Ay, By));  in main()
216     PetscCall(MatMultTranspose(A, Ay, Ax));  in main()
231   PetscCall(VecDestroy(&Ay));  in main()