7   Mat           C;  in main()  local
21   PetscCall(MatCreate(PETSC_COMM_WORLD, &C));  in main()
22   PetscCall(MatSetSizes(C, PETSC_DECIDE, PETSC_DECIDE, m * n, m * n));  in main()
23   PetscCall(MatSetFromOptions(C));  in main()
24   PetscCall(MatSetUp(C));  in main()
27     PetscCall(MatSetOption(C, MAT_SYMMETRIC, PETSC_TRUE));  in main()
28     PetscCall(MatSetOption(C, MAT_SYMMETRY_ETERNAL, PETSC_TRUE));  in main()
38         PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES));  in main()
42         PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES));  in main()
46         PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES));  in main()
50         PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES));  in main()
53       PetscCall(MatSetValues(C, 1, &Ii, 1, &Ii, &v, INSERT_VALUES));  in main()
56   PetscCall(MatAssemblyBegin(C, MAT_FINAL_ASSEMBLY));  in main()
57   PetscCall(MatAssemblyEnd(C, MAT_FINAL_ASSEMBLY));  in main()
58   PetscCall(MatGetOrdering(C, MATORDERINGRCM, &perm, &iperm));  in main()
59   PetscCall(MatView(C, PETSC_VIEWER_STDOUT_WORLD));  in main()
66   PetscCall(MatMult(C, u, b));  in main()
70   PetscCall(MatNorm(C, NORM_FROBENIUS, &norm));  in main()
72   PetscCall(MatNorm(C, NORM_1, &norm));  in main()
74   PetscCall(MatNorm(C, NORM_INFINITY, &norm));  in main()
83   PetscCall(MatLUFactor(C, perm, iperm, &info));  in main()
86   PetscCall(MatSolve(C, b, x));  in main()
94   PetscCall(MatSolveAdd(C, b, y, x));  in main()
106   PetscCall(MatDestroy(&C));  in main()