25   Mat          A, A_save, B, C, P, C1, R;  in main()  local
60   PetscCall(MatCreate(PETSC_COMM_WORLD, &A_save));  in main()
61   PetscCall(MatLoad(A_save, viewer));  in main()
70     PetscCall(PetscObjectReference((PetscObject)A_save));  in main()
71     B = A_save;  in main()
74   if (flgA) PetscCall(MatConvert(A_save, A_mattype, MAT_INPLACE_MATRIX, &A_save));  in main()
76   PetscCall(MatSetFromOptions(A_save));  in main()
89     PetscCall(MatDuplicate(A_save, MAT_COPY_VALUES, &A));  in main()
135       PetscCall(MatConvert(A_save, MATDENSE, MAT_INITIAL_MATRIX, &A));  in main()
236     PetscCall(MatDuplicate(A_save, MAT_COPY_VALUES, &A));  in main()
310   PetscCall(MatDestroy(&A_save));  in main()