-#if __STDC__ || defined(STDC_HEADERS)
-# include <stdlib.h> /* for qsort() and malloc() */
-# include <string.h>
-static void *xmalloc (int);
-# ifndef CONST
-# define CONST const
-# endif
-#else
-extern char *malloc ();
-static void *xmalloc ();
-# ifndef CONST
-# define CONST
-# endif