libRASCH
|
|
| Home | |
General |
|
| About libRASCH/News | |
| Design | |
| Screen shots | |
| Sample programs (with source code) | |
| License | |
Download |
|
| libRASCH | |
| Tools | |
Documentation |
|
| User | |
| Developer | |
Resources |
|
| Mailing list | |
| Supported Formats | |
| Plugins | |
| Status | |
| Links | |
| Contact | |
| About this site | |
|
Last updated Tue Mar 27 23:03:52 2007 |
ra_endian.h
Go to the documentation of this file.00001 00009 /*---------------------------------------------------------------------------- 00010 * 00011 * Copyright (C) 2002-2003, Raphael Schneider 00012 * See the file COPYING for information on usage and redistribution. 00013 * 00014 * $Header: /home/cvs_repos.bak/librasch/include/ra_endian.h,v 1.6 2004/06/29 15:50:43 rasch Exp $ 00015 * 00016 *--------------------------------------------------------------------------*/ 00017 00018 #ifndef _RA_ENDIAN_H 00019 #define _RA_ENDIAN_H 00020 00021 #ifdef __cplusplus 00022 extern "C" { 00023 #endif 00024 00025 #define RA_LITTLE_ENDIAN 1 00026 #define RA_BIG_ENDIAN 2 00027 00028 #define _swap16(x,l) \ 00029 do { \ 00030 short endian_t = x; \ 00031 int endian_type = get_endian_type(); \ 00032 \ 00033 if (l && (endian_type == RA_LITTLE_ENDIAN)) \ 00034 break; \ 00035 if (!l && (endian_type == RA_BIG_ENDIAN)) \ 00036 break; \ 00037 \ 00038 x = ((endian_t & 0x00ff) << 8) | \ 00039 ((endian_t & 0xff00) >> 8); \ 00040 } while(0) 00041 00042 #define _swap32(x,l) \ 00043 do { \ 00044 long endian_t = x; \ 00045 int endian_type = get_endian_type(); \ 00046 \ 00047 if (l && (endian_type == RA_LITTLE_ENDIAN)) \ 00048 break; \ 00049 if (!l && (endian_type == RA_BIG_ENDIAN)) \ 00050 break; \ 00051 \ 00052 x = ((endian_t & 0x000000ff) << 24) | \ 00053 ((endian_t & 0x0000ff00) << 8) | \ 00054 ((endian_t & 0x00ff0000) >> 8) | \ 00055 ((endian_t & 0xff000000) >> 24); \ 00056 } while(0) 00057 00058 00059 #define be16_to_cpu(x) _swap16(x,0) 00060 #define be32_to_cpu(x) _swap32(x,0) 00061 00062 #define le16_to_cpu(x) _swap16(x,1) 00063 #define le32_to_cpu(x) _swap32(x,1) 00064 00065 00066 #ifdef __cplusplus 00067 } 00068 #endif 00069 00070 #endif /* _RA_ENDIAN_H */
Generated on Fri May 27 11:32:39 2005 for libRASCH by
1.4.2