14   Mat         A1, A2, A3, A4, A5, B, C, C1, nest;  in main()  local
30   PetscCall(MatCreate(comm, &A1));  in main()
32   PetscCall(MatSetSizes(A1, PETSC_DECIDE, PETSC_DECIDE, m * n, m * n));  in main()
33   PetscCall(MatSetFromOptions(A1));  in main()
34   PetscCall(MatSetUp(A1));  in main()
35   PetscCall(MatGetOwnershipRange(A1, &istart, &iend));  in main()
42       PetscCall(MatSetValues(A1, 1, &ii, 1, &J, &v, INSERT_VALUES));  in main()
46       PetscCall(MatSetValues(A1, 1, &ii, 1, &J, &v, INSERT_VALUES));  in main()
50       PetscCall(MatSetValues(A1, 1, &ii, 1, &J, &v, INSERT_VALUES));  in main()
54       PetscCall(MatSetValues(A1, 1, &ii, 1, &J, &v, INSERT_VALUES));  in main()
57     PetscCall(MatSetValues(A1, 1, &ii, 1, &ii, &v, INSERT_VALUES));  in main()
59   PetscCall(MatAssemblyBegin(A1, MAT_FINAL_ASSEMBLY));  in main()
60   PetscCall(MatAssemblyEnd(A1, MAT_FINAL_ASSEMBLY));  in main()
61   PetscCall(MatView(A1, PETSC_VIEWER_STDOUT_WORLD));  in main()
63   PetscCall(MatDuplicate(A1, MAT_COPY_VALUES, &A2));  in main()
64   PetscCall(MatDuplicate(A1, MAT_COPY_VALUES, &A3));  in main()
65   PetscCall(MatDuplicate(A1, MAT_COPY_VALUES, &A4));  in main()
75     PetscCall(MatGetLocalSize(A1, &m, NULL));  in main()
76     PetscCall(MatGetOwnershipRange(A1, &st, NULL));  in main()
83     Mat mata[] = {A1, A2, A3, A4};  in main()
138   PetscCall(MatCreateTranspose(A1, &A5)); /* A1 is symmetric */  in main()
151   PetscCall(MatDestroy(&A1));  in main()