#include <db_cxx.h> static int DbEnv::log_compare(const DbLsn *lsn0, const DbLsn *lsn1);
         The 
              
         DbEnv::log_compare()
         method allows the caller to compare two DbLsn
         structures, returning 0 if they are equal, 1 if lsn0 is greater than lsn1, and -1 if lsn0 is less than lsn1.