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/* @(#)intcvt.h 1.1 99/10/18 Copyright 1986 J. Schilling */
/*
* Definitions for conversion to/from integer data types of various size.
*
* Copyright (c) 1986 J. Schilling
*/
/*
* 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 2, 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; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _INTCVT_H
#define _INTCVT_H
#define i_to_2_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 8) & 0xFF,\
((Uchar *)(a))[1] = (i) & 0xFF)
#define i_to_3_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 16)& 0xFF,\
((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
((Uchar *)(a))[2] = (i) & 0xFF)
#define i_to_4_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 24)& 0xFF,\
((Uchar *)(a))[1] = ((i) >> 16)& 0xFF,\
((Uchar *)(a))[2] = ((i) >> 8) & 0xFF,\
((Uchar *)(a))[3] = (i) & 0xFF)
#define a_to_byte(a) (((Int8_t*) a)[0])
#define a_to_u_byte(a) ((UInt8_t) \
(((Uchar*) a)[0] & 0xFF))
#define a_to_u_2_byte(a) ((UInt16_t) \
((((Uchar*) a)[1] & 0xFF) | \
(((Uchar*) a)[0] << 8 & 0xFF00)))
#define a_to_2_byte(a) (int)(Int16_t)a_to_u_2_byte(a)
#define a_to_u_3_byte(a) ((Ulong) \
((((Uchar*) a)[2] & 0xFF) | \
(((Uchar*) a)[1] << 8 & 0xFF00) | \
(((Uchar*) a)[0] << 16 & 0xFF0000)))
#define a_to_3_byte(a) a_to_u_3_byte(a) /* XXX Is there a signed version ? */
#ifdef __STDC__
# define __TOP_4BYTE 0xFF000000UL
#else
# define __TOP_4BYTE 0xFF000000
#endif
#define a_to_u_4_byte(a) ((Ulong) \
((((Uchar*) a)[3] & 0xFF) | \
(((Uchar*) a)[2] << 8 & 0xFF00) | \
(((Uchar*) a)[1] << 16 & 0xFF0000) | \
(((Uchar*) a)[0] << 24 & __TOP_4BYTE)))
#define a_to_4_byte(a) (long)(Int32_t)a_to_u_4_byte(a)
#define la_to_u_2_byte(a) ((UInt16_t) \
((((Uchar*) a)[0] & 0xFF) | \
(((Uchar*) a)[1] << 8 & 0xFF00)))
#define la_to_2_byte(a) (int)(Int16_t)la_to_u_2_byte(a)
#define la_to_u_3_byte(a) ((Ulong) \
((((Uchar*) a)[0] & 0xFF) | \
(((Uchar*) a)[1] << 8 & 0xFF00) | \
(((Uchar*) a)[2] << 16 & 0xFF0000)))
#define la_to_3_byte(a) la_to_u_3_byte(a) /* XXX Is there a signed version ? */
#define la_to_u_4_byte(a) ((Ulong) \
((((Uchar*) a)[0] & 0xFF) | \
(((Uchar*) a)[1] << 8 & 0xFF00) | \
(((Uchar*) a)[2] << 16 & 0xFF0000) | \
(((Uchar*) a)[3] << 24 & __TOP_4BYTE)))
#define la_to_4_byte(a) (long)(Int32_t)la_to_u_4_byte(a)
#endif /* _INTCVT_H */
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