/* Copyright (C) 2008  Emmanuel Varoquaux

   This file is part of XOS.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>. */

#ifndef MISC_H
#define MISC_H

#include <ctype.h>

#define RUBOUT '\177'

#define letter_or_digit(c) (isalnum(c) || !isascii(c))
#define whitespace(c)      ((c) == ' ' || (c) == '\t')

#define ctrl_char(c) (((c) & 0x80) == 0 && (c) < 0x20)
#define ctrl(c)      ((c) & 0x1f)
#define unctrl(c)    ((c) | 0x40)

#endif