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tools.h

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00001 /*
00002     Simple Operating System for Smartcard Education
00003     Copyright (C) 2002  Matthias Bruestle <m@mbsks.franken.de>
00004 
00005     This program is free software; you can redistribute it and/or modify
00006     it under the terms of the GNU General Public License as published by
00007     the Free Software Foundation; either version 2 of the License, or
00008     (at your option) any later version.
00009 
00010     This program is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License
00016     along with this program; if not, write to the Free Software
00017     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00018 */
00019 
00026 #ifndef SOSSE_TOOLS_H
00027 #define SOSSE_TOOLS_H
00028 
00029 #include <config.h>
00030 #include <types.h>
00031 
00033 #define swap_us(us) (((us&0x00FF)<<8)|((us&0xFF00)>>8))
00034 
00035 #define swap_ul(ul) (((ul&0x000000FF)<<24)|((ul&0x0000FF00)<<8)|((ul&0x00FF0000)>>8)|((ul&0xFF000000)>>24))
00036 
00042 void hton_us( iu16 *us, iu8 num );
00048 void hton_ul( iu32 *ul, iu8 num );
00049 
00050 #ifndef ENDIAN_LITTLE
00051 #define hton_us(us)
00052 #define hton_ul(ul)
00053 #endif
00054 
00056 #define min(a,b) ((a)<(b)?(a):(b))
00057 
00059 #define max(a,b) ((a)>(b)?(a):(b))
00060 
00061 #endif /* SOSSE_TOOLS_H */

Copyright 2002 by Matthias Bruestle. This is licensed under the GNU General Public License.