/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSG_ENDIAN
#define OSG_ENDIAN 1

namespace osg {

enum Endian
{
    BigEndian,
    LittleEndian
};

inline Endian getCpuByteOrder()
{
    static char big_endian_1[2] = { 0, 1 };

    if ( (*((short*) big_endian_1)) == 1)
        return BigEndian;
    else 
        return LittleEndian;
} 


template <class T>
inline void swapBytes( T& in )
{
    if( sizeof( T ) == 1 ) return;

    typedef unsigned char * BytePtr;

    T tmp = in;
    BytePtr sptr = (BytePtr)&in;
    BytePtr tptr = (BytePtr)&tmp + sizeof(T)-1;

    for( unsigned int i = 0; i < sizeof(T); ++i )
        *(sptr++) = *(dptr--);
}


}

#endif