reactos/sdk/tools/mkisofs/schilytools/include/schily/intcvt.h

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/* @(#)intcvt.h 1.8 13/10/26 Copyright 1986-2013 J. Schilling */
/*
* Definitions for conversion to/from integer data types of various size.
*
* Copyright (c) 1986-2013 J. Schilling
*/
/*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* See the file CDDL.Schily.txt in this distribution for details.
* A copy of the CDDL is also available via the Internet at
* http://www.opensource.org/licenses/cddl1.txt
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file CDDL.Schily.txt from this distribution.
*/
#ifndef _SCHILY_INTCVT_H
#define _SCHILY_INTCVT_H
#ifndef _SCHILY_MCONFIG_H
#include <schily/mconfig.h>
#endif
#ifndef _SCHILY_UTYPES_H
#include <schily/utypes.h>
#endif
#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 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)
/*
* Little Endian versions of above macros
*/
#define li_to_2_byte(a, i) (((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
((Uchar *)(a))[0] = (i) & 0xFF)
#define li_to_3_byte(a, i) (((Uchar *)(a))[2] = ((i) >> 16)& 0xFF,\
((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
((Uchar *)(a))[0] = (i) & 0xFF)
#define li_to_4_byte(a, i) (((Uchar *)(a))[3] = ((i) >> 24)& 0xFF,\
((Uchar *)(a))[2] = ((i) >> 16)& 0xFF,\
((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
((Uchar *)(a))[0] = (i) & 0xFF)
#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 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 /* _SCHILY_INTCVT_H */