char * instr _(( char *big, char *little ));
char * safecpy _(( char *to, char *from, int len ));
char * savestr _(( char *str ));
-#if defined(I_STDARG) && defined(HAS_VPRINTF)
void croak _(( char *pat, ... ));
void fatal _(( char *pat, ... ));
void warn _(( char *pat, ... ));
-#else /* defined(I_STDARG) && defined(HAS_VPRINTF) */
-void croak _(( char *pat, int a1, int a2, int a3, int a4 ));
-void Myfatal ();
-void warn ();
-#endif /* defined(I_STDARG) && defined(HAS_VPRINTF) */
int prewalk _(( int numit, int level, int node, int *numericptr ));
Malloc_t safemalloc _((MEM_SIZE nbytes));