108     Mat     Cs, Cse;  in main()  local
112     PetscCall(MatTranspose(C, MAT_INITIAL_MATRIX, &Cs));  in main()
113     PetscCall(MatAXPY(Cs, 1.0, C, DIFFERENT_NONZERO_PATTERN));  in main()
114     PetscCall(MatConvert(Cs, MATAIJ, MAT_INPLACE_MATRIX, &Cs));  in main()
115     PetscCall(MatSetOption(Cs, MAT_SYMMETRIC, PETSC_TRUE));  in main()
116     PetscCall(MatGetType(Cs, &Cstype));  in main()
118     PetscCall(PetscObjectSetName((PetscObject)Cs, "symm_initial"));  in main()
119     PetscCall(MatViewFromOptions(Cs, NULL, "-view"));  in main()
121     PetscCall(MatConvert(Cs, Ctype, MAT_INITIAL_MATRIX, &Cse));  in main()
124     PetscCall(MatMultEqual(Cs, Cse, 5, &flg));  in main()
127     PetscCall(MatConvert(Cs, Ctype, MAT_REUSE_MATRIX, &Cse));  in main()
130     PetscCall(MatMultEqual(Cs, Cse, 5, &flg));  in main()
133     PetscCall(MatCopy(Cs, Cse, SAME_NONZERO_PATTERN));  in main()
136     PetscCall(MatMultEqual(Cs, Cse, 5, &flg));  in main()
139     PetscCall(MatCopy(Cs, Cse, SUBSET_NONZERO_PATTERN));  in main()
142     PetscCall(MatMultEqual(Cs, Cse, 5, &flg));  in main()
145     PetscCall(MatCopy(Cs, Cse, DIFFERENT_NONZERO_PATTERN));  in main()
148     PetscCall(MatMultEqual(Cs, Cse, 5, &flg));  in main()
152     PetscCall(MatDestroy(&Cs));  in main()