7   Mat         C, C1, C2, CU;  in main()  local
106   PetscCall(MatDuplicate(C, MAT_DO_NOT_COPY_VALUES, &C2));  in main()
111     PetscCall(MatSetValues(C2, 1, &Ii, 1, &Ii, &v, ADD_VALUES));  in main()
113   PetscCall(MatAssemblyBegin(C2, MAT_FINAL_ASSEMBLY));  in main()
114   PetscCall(MatAssemblyEnd(C2, MAT_FINAL_ASSEMBLY));  in main()
115   PetscCall(PetscObjectSetName((PetscObject)C2, "C2"));  in main()
116   PetscCall(MatViewFromOptions(C2, NULL, "-view"));  in main()
118   PetscCall(MatAXPY(C1, 2.0, C2, SUBSET_NONZERO_PATTERN));  in main()
119   PetscCall(MatAXPY(CU, 2.0, C2, UNKNOWN_NONZERO_PATTERN));  in main()
131   PetscCall(MatDuplicate(C2, MAT_COPY_VALUES, &CU));  in main()
133   PetscCall(MatAXPY(C2, 2.0, C, SAME_NONZERO_PATTERN));  in main()
135   PetscCall(MatGetInfo(C2, MAT_GLOBAL_SUM, &info));  in main()
137   PetscCall(MatViewFromOptions(C2, NULL, "-view"));  in main()
138   PetscCall(MatMultEqual(CU, C2, 10, &flg));  in main()
146   PetscCall(MatDestroy(&C2));  in main()