newlib/libc/sys/mmixware/isatty.c


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/* isatty for MMIXware.

   Copyright (C) 2001 Hans-Peter Nilsson.
   Permission to use, copy, modify, and distribute this software is freely
   granted, provided that this notice is preserved with no changes.
   THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
   IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   PURPOSE.  */

#include <_ansi.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "sys/syscall.h"

isatty (fd)
     int fd;
{
  return fd == 0 || fd == 1 || fd == 2;
}