#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.