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cl_endian.h

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/*
        $Id: cl_endian.h,v 1.4 2001/03/04 17:54:47 mbn Exp $

        ------------------------------------------------------------------------
        ClanLib, the platform independent game SDK.

        This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
        version 2. See COPYING for details.

        For a total list of contributers see CREDITS.

        ------------------------------------------------------------------------
*/


#ifndef header_endian
#define header_endian

class CL_Endian
//: Endianess management class.
// The CL_Endian class is used to convert between different endianess. There
// are also a set of defines to the lazy developer:
// <code>
// #define SWAP_IF_BIG(i)
// #define SWAP_IF_LITTLE(i)
// #define SWAP_IF_BIG_ALOT(i, times)
// #define SWAP_IF_LITTLE_ALOT(i, times)
// #define IS_SYSTEM_64BIT()
// </code>
// Each of these defines call CL_Endian::is_system_big() and CL_Endian::swap.
// For the exact definition of the defines, have a look in
// ClanLib/Layer1/IOData/API/endian.h
{
public:
 //     static void swap(void *data, int type_size);
        //: Swaps the bytes between little and big endian.
        
        static void swap(void *data, int type_size, int total_times=1);
        //: Swaps larger amounts of data between little and big endian.

        static bool is_system_big();
        //: Returns true if big endian system.

        static bool is_system_64bit();
        //: Returns true if 64 bit system.
};

// Defines to the lazy developer:
#define SWAP_IF_BIG(i) if (CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i));
#define SWAP_IF_LITTLE(i) if (!CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i));

#define SWAP_IF_BIG_ALOT(i, times) if (CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i), times);
#define SWAP_IF_LITTLE_ALOT(i, times) if (!CL_Endian::is_system_big()) CL_Endian::swap(&i, sizeof(i), times);

#define IS_SYSTEM_64BIT() CL_Endian::is_system_64bit();

#endif

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