2 * nbtscanner -- a tool for scanning large networks for SMB servers.
4 * byteorder.h: structure access functions (i386 only!).
5 * Copyright (C) 2000 Steinar H. Gunderson
7 * Large amounts of code adapted from Samba (http://www.samba.org/)
8 * Copyright (C) Andrew Tridgell 1994-1998, and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #define _BYTEORDER_H 1
28 #define IVAL(buf,pos) (SVAL(buf,pos)|SVAL(buf,(pos)+2)<<16)
29 #define SREV(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
30 #define SVAL(buf,pos) (*(unsigned short *)((char *)(buf) + (pos)))
31 #define SSVAL(buf,pos,val) SVAL(buf,pos)=((unsigned short)(val))
32 #define RSSVAL(buf,pos,val) SSVAL(buf,pos,SREV(val))
33 #define RSVAL(buf,pos) SREV(SVAL(buf,pos))
34 #define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
35 #define RIVAL(buf,pos) IREV(IVAL(buf,pos))
36 #define IREV(x) ((SREV(x)<<16) | (SREV((x)>>16)))
38 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
40 #endif /* _BYTEORDER_H */