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/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
* Macros for storing and retrieving data in msb first and lsb first order.
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*/
/* RCSID("$OpenBSD: getput.h,v 1.5 2000/09/07 20:27:51 deraadt Exp $"); */
#ifndef GETPUT_H
#define GETPUT_H
/*------------ macros for storing/extracting msb first words -------------*/
#define GET_32BIT(cp) (((unsigned long)(unsigned char)(cp)[0] << 24) | \
((unsigned long)(unsigned char)(cp)[1] << 16) | \
((unsigned long)(unsigned char)(cp)[2] << 8) | \
((unsigned long)(unsigned char)(cp)[3]))
#define GET_16BIT(cp) (((unsigned long)(unsigned char)(cp)[0] << 8) | \
((unsigned long)(unsigned char)(cp)[1]))
#define PUT_32BIT(cp, value) do { \
(cp)[0] = (value) >> 24; \
(cp)[1] = (value) >> 16; \
(cp)[2] = (value) >> 8; \
(cp)[3] = (value); } while (0)
#define PUT_16BIT(cp, value) do { \
(cp)[0] = (value) >> 8; \
(cp)[1] = (value); } while (0)
/*------------ macros for storing/extracting lsb first words -------------*/
#define GET_32BIT_LSB_FIRST(cp) \
(((unsigned long)(unsigned char)(cp)[0]) | \
((unsigned long)(unsigned char)(cp)[1] << 8) | \
((unsigned long)(unsigned char)(cp)[2] << 16) | \
((unsigned long)(unsigned char)(cp)[3] << 24))
#define GET_16BIT_LSB_FIRST(cp) \
(((unsigned long)(unsigned char)(cp)[0]) | \
((unsigned long)(unsigned char)(cp)[1] << 8))
#define PUT_32BIT_LSB_FIRST(cp, value) do { \
(cp)[0] = (value); \
(cp)[1] = (value) >> 8; \
(cp)[2] = (value) >> 16; \
(cp)[3] = (value) >> 24; } while (0)
#define PUT_16BIT_LSB_FIRST(cp, value) do { \
(cp)[0] = (value); \
(cp)[1] = (value) >> 8; } while (0)
#endif /* GETPUT_H */
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