7   Mat         mat, B, C;  in main()  local
19   PetscCall(MatCreate(PETSC_COMM_WORLD, &mat));  in main()
20   PetscCall(MatSetSizes(mat, PETSC_DECIDE, PETSC_DECIDE, 4, 4));  in main()
21   PetscCall(MatSetFromOptions(mat));  in main()
22   PetscCall(MatSetUp(mat));  in main()
28   PetscCall(MatSetValues(mat, 1, &i, 1, &j, &v, INSERT_VALUES));  in main()
32   PetscCall(MatSetValues(mat, 1, &i, 1, &j, &v, INSERT_VALUES));  in main()
36   PetscCall(MatSetValues(mat, 1, &i, 1, &j, &v, INSERT_VALUES));  in main()
40   PetscCall(MatSetValues(mat, 1, &i, 1, &j, &v, INSERT_VALUES));  in main()
41   PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));  in main()
42   PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));  in main()
47   PetscCall(MatView(mat, viewer));  in main()
49   PetscCall(MatGetOrdering(mat, MATORDERINGNATURAL, &isrow, &iscol));  in main()
51   PetscCall(MatPermute(mat, isrow, iscol, &B));  in main()
56   PetscCall(MatReorderForNonzeroDiagonal(mat, 1.e-8, isrow, iscol));  in main()
57   PetscCall(MatPermute(mat, isrow, iscol, &B));  in main()
69   PetscCall(MatGetOrdering(mat, MATORDERINGND, &isrow, &iscol));  in main()
70   PetscCall(MatPermute(mat, isrow, iscol, &B));  in main()
79   PetscCall(MatReorderForNonzeroDiagonal(mat, 1.e-8, isrow, iscol));  in main()
80   PetscCall(MatPermute(mat, isrow, iscol, &B));  in main()
92   PetscCall(MatGetOrdering(mat, MATORDERINGRCM, &isrow, &iscol));  in main()
93   PetscCall(MatPermute(mat, isrow, iscol, &B));  in main()
102   PetscCall(MatReorderForNonzeroDiagonal(mat, 1.e-8, isrow, iscol));  in main()
103   PetscCall(MatPermute(mat, isrow, iscol, &B));  in main()
123     PetscCall(MatSetValues(mat, 1, &i, 1, &i, &v, INSERT_VALUES));  in main()
125   PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));  in main()
126   PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));  in main()
127   PetscCall(MatLUFactor(mat, isrow, iscol, NULL));  in main()
132   PetscCall(MatDestroy(&mat));  in main()