/*----------------------------------------------------------------------  File    : listops.h  Contents: some special list operations  Author  : Christian Borgelt  History : 02.11.2000 file created from file lists.h----------------------------------------------------------------------*/#ifndef __LISTOPS__#define __LISTOPS__/*----------------------------------------------------------------------  Type Definitions----------------------------------------------------------------------*/typedef struct _le {            /* --- a list element --- */  struct _le *succ;             /* pointer to successor */  struct _le *pred;             /* pointer to predecessor */} LE;                           /* (list element) */typedef int LCMPFN (const void *p1, const void *p2, void *data);/*----------------------------------------------------------------------  Functions----------------------------------------------------------------------*/extern void* l_sort    (void *list, LCMPFN cmpfn, void *data);extern void* l_reverse (void *list);#endif