13   Mat                   *mats, *Asub, *Bsub;  in main()  local
553   PetscCall(MatCreateSubMatrices(A, 2, irow, icol, MAT_INITIAL_MATRIX, &Asub));  in main()
555   PetscCall(CheckMat(Asub[0], Bsub[0], PETSC_FALSE, "MatCreateSubMatrices[0]"));  in main()
556   PetscCall(CheckMat(Asub[1], Bsub[1], PETSC_FALSE, "MatCreateSubMatrices[1]"));  in main()
557   PetscCall(MatCreateSubMatrices(A, 2, irow, icol, MAT_REUSE_MATRIX, &Asub));  in main()
559   PetscCall(CheckMat(Asub[0], Bsub[0], PETSC_FALSE, "MatCreateSubMatrices[0]"));  in main()
560   PetscCall(CheckMat(Asub[1], Bsub[1], PETSC_FALSE, "MatCreateSubMatrices[1]"));  in main()
561   PetscCall(MatDestroySubMatrices(2, &Asub));  in main()
641     PetscCall(MatCreateSubMatrices(A, 2, Ais, Ais, MAT_INITIAL_MATRIX, &Asub));  in main()
643     PetscCall(CheckMat(Asub[0], Bsub[0], PETSC_FALSE, "MatIncreaseOverlap[0]"));  in main()
644     PetscCall(CheckMat(Asub[1], Bsub[1], PETSC_FALSE, "MatIncreaseOverlap[1]"));  in main()
645     PetscCall(MatDestroySubMatrices(2, &Asub));  in main()