cl_endian.h

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00001 /*
00002 **  ClanLib SDK
00003 **  Copyright (c) 1997-2011 The ClanLib Team
00004 **
00005 **  This software is provided 'as-is', without any express or implied
00006 **  warranty.  In no event will the authors be held liable for any damages
00007 **  arising from the use of this software.
00008 **
00009 **  Permission is granted to anyone to use this software for any purpose,
00010 **  including commercial applications, and to alter it and redistribute it
00011 **  freely, subject to the following restrictions:
00012 **
00013 **  1. The origin of this software must not be misrepresented; you must not
00014 **     claim that you wrote the original software. If you use this software
00015 **     in a product, an acknowledgment in the product documentation would be
00016 **     appreciated but is not required.
00017 **  2. Altered source versions must be plainly marked as such, and must not be
00018 **     misrepresented as being the original software.
00019 **  3. This notice may not be removed or altered from any source distribution.
00020 **
00021 **  Note: Some of the libraries ClanLib may link to may have additional
00022 **  requirements or restrictions.
00023 **
00024 **  File Author(s):
00025 **
00026 **    Magnus Norddahl
00027 **    (if your name is missing here, please add it)
00028 */
00029 
00032 
00033 #pragma once
00034 
00035 #include "../api_core.h"
00036 
00048 class CL_API_CORE CL_Endian
00049 {
00050 public:
00053 
00059         static void swap(void *data, int type_size, int total_times=1);
00060 
00064 
00066 
00067         static bool is_system_big();
00068 
00070 
00071         static bool is_system_64bit();
00073 };
00074 
00075 // Defines to the lazy developer:
00076 #define SWAP_IF_BIG(i) if (CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i))
00077 #define SWAP_IF_LITTLE(i) if (!CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i))
00078 
00079 #define SWAP_IF_BIG_ALOT(i, times) if (CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i), times)
00080 #define SWAP_IF_LITTLE_ALOT(i, times) if (!CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i), times)
00081 
00082 #define IS_SYSTEM_64BIT() CL_Endian::is_system_64bit()
00083