7   Mat         mat;  in main()  local
24   PetscCall(MatCreate(PETSC_COMM_WORLD, &mat));  in main()
25   PetscCall(MatSetSizes(mat, PETSC_DECIDE, PETSC_DECIDE, m, n));  in main()
26   PetscCall(MatSetFromOptions(mat));  in main()
27   if (struct_only) PetscCall(MatSetOption(mat, MAT_STRUCTURE_ONLY, PETSC_TRUE));  in main()
28   PetscCall(MatSetUp(mat));  in main()
29   PetscCall(MatGetOwnershipRange(mat, &rstart, &rend));  in main()
33       PetscCall(MatSetValues(mat, 1, &i, 1, &j, &v, INSERT_VALUES));  in main()
36   PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));  in main()
37   PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));  in main()
38   PetscCall(MatView(mat, PETSC_VIEWER_STDOUT_WORLD));  in main()
41   PetscCall(MatDestroy(&mat));  in main()