114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/* @(#)intcvt.h 1.4 03/12/29 Copyright 1986-2003 J. Schilling */
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/*
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* Definitions for conversion to/from integer data types of various size.
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*
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* Copyright (c) 1986-2003 J. Schilling
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; see the file COPYING. If not, write to the Free Software
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* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _INTCVT_H
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#define _INTCVT_H
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#ifndef _MCONFIG_H
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#include <mconfig.h>
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#endif
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#define i_to_2_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[1] = (i) & 0xFF)
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#define i_to_3_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[2] = (i) & 0xFF)
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#define i_to_4_byte(a, i) (((Uchar *)(a))[0] = ((i) >> 24)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[2] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[3] = (i) & 0xFF)
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#define a_to_byte(a) (((Int8_t *) a)[0])
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#define a_to_u_byte(a) ((UInt8_t) \
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(((Uchar *) a)[0] & 0xFF))
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#define a_to_u_2_byte(a) ((UInt16_t) \
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((((Uchar *) a)[1] & 0xFF) | \
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(((Uchar *) a)[0] << 8 & 0xFF00)))
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#define a_to_2_byte(a) (int)(Int16_t)a_to_u_2_byte(a)
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#define a_to_u_3_byte(a) ((Ulong) \
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((((Uchar *) a)[2] & 0xFF) | \
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(((Uchar *) a)[1] << 8 & 0xFF00) | \
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(((Uchar *) a)[0] << 16 & 0xFF0000)))
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#define a_to_3_byte(a) a_to_u_3_byte(a) /* XXX Is there a signed version ? */
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#ifdef __STDC__
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# define __TOP_4BYTE 0xFF000000UL
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#else
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# define __TOP_4BYTE 0xFF000000
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#endif
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#define a_to_u_4_byte(a) ((Ulong) \
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((((Uchar*) a)[3] & 0xFF) | \
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(((Uchar*) a)[2] << 8 & 0xFF00) | \
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(((Uchar*) a)[1] << 16 & 0xFF0000) | \
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(((Uchar*) a)[0] << 24 & __TOP_4BYTE)))
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#define a_to_4_byte(a) (long)(Int32_t)a_to_u_4_byte(a)
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/*
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* Little Endian versions of above macros
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*/
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#define li_to_2_byte(a, i) (((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[0] = (i) & 0xFF)
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#define li_to_3_byte(a, i) (((Uchar *)(a))[2] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[0] = (i) & 0xFF)
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#define li_to_4_byte(a, i) (((Uchar *)(a))[3] = ((i) >> 24)& 0xFF,\
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((Uchar *)(a))[2] = ((i) >> 16)& 0xFF,\
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((Uchar *)(a))[1] = ((i) >> 8) & 0xFF,\
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((Uchar *)(a))[0] = (i) & 0xFF)
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#define la_to_u_2_byte(a) ((UInt16_t) \
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((((Uchar*) a)[0] & 0xFF) | \
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(((Uchar*) a)[1] << 8 & 0xFF00)))
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#define la_to_2_byte(a) (int)(Int16_t)la_to_u_2_byte(a)
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#define la_to_u_3_byte(a) ((Ulong) \
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((((Uchar*) a)[0] & 0xFF) | \
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(((Uchar*) a)[1] << 8 & 0xFF00) | \
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(((Uchar*) a)[2] << 16 & 0xFF0000)))
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#define la_to_3_byte(a) la_to_u_3_byte(a) /* XXX Is there a signed version ? */
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#define la_to_u_4_byte(a) ((Ulong) \
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((((Uchar*) a)[0] & 0xFF) | \
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(((Uchar*) a)[1] << 8 & 0xFF00) | \
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(((Uchar*) a)[2] << 16 & 0xFF0000) | \
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(((Uchar*) a)[3] << 24 & __TOP_4BYTE)))
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#define la_to_4_byte(a) (long)(Int32_t)la_to_u_4_byte(a)
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#endif /* _INTCVT_H */
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