#define NOARGC  /* no arg count passing */
#define FIXARGC /* don't expect arg counts passed in */
/*
   return 'true' if c is a control character
   (0-31 or 127)
*/
iscntrl(c) 
char * c; 
{
  /* c is a simulated unsigned integer */
  return ((c <= 31) || (c == 127));
}