PK_LTOPOL_is_null_m

This macro tests if an ltopol is null.


#define PK_LTOPOL_is_null_m( l )                              \
         (                                                    \
           (l).lattice == PK_ENTITY_null && (l).ltopol == 0 ? \
           PK_LOGICAL_true : PK_LOGICAL_false                 \
         )