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|
#if !defined(ENDIAN_HPP)
#define ENDIAN_HPP
//______________________________________________________________________________
//
// endian.hpp
// Facilitate endian conversions.
//namespace xxx
//{
//--------------------------------------
inline
bool big_endian()
{
long lTest = 1;
return (reinterpret_cast<char*>(&lTest)[0] == 0);
}
//--------------------------------------
inline
short swap_endian(short i16)
{
return i16 << 8 & 0xff00
| i16 >> 8 & 0x00ff;
}
//--------------------------------------
inline
unsigned short swap_endian(unsigned short ui16)
{
return ui16 << 8 & 0xff00
| ui16 >> 8 & 0x00ff;
}
//--------------------------------------
inline
unsigned int swap_endian(unsigned int i32)
{
return i32 << 24 & 0xff000000
| i32 << 8 & 0x00ff0000
| i32 >> 8 & 0x0000ff00
| i32 >> 24 & 0x000000ff;
}
//--------------------------------------
inline
int swap_endian(int ui32)
{
return ui32 << 24 & 0xff000000
| ui32 << 8 & 0x00ff0000
| ui32 >> 8 & 0x0000ff00
| ui32 >> 24 & 0x000000ff;
}
//--------------------------------------
inline
short big_endian(short i16Native)
{
if (big_endian())
{
return i16Native;
}
return swap_endian(i16Native);
}
//--------------------------------------
inline
unsigned short big_endian(unsigned short ui16Native)
{
if (big_endian())
{
return ui16Native;
}
return swap_endian(ui16Native);
}
//--------------------------------------
inline
unsigned int big_endian(unsigned int i32Native)
{
if (big_endian())
{
return i32Native;
}
return swap_endian(i32Native);
}
//--------------------------------------
inline
int big_endian(int ui32Native)
{
if (big_endian())
{
return ui32Native;
}
return swap_endian(ui32Native);
}
//--------------------------------------
inline
short little_endian(short i16Native)
{
if (!big_endian())
{
return i16Native;
}
return swap_endian(i16Native);
}
//--------------------------------------
inline
unsigned short little_endian(unsigned short ui16Native)
{
if (!big_endian())
{
return ui16Native;
}
return swap_endian(ui16Native);
}
//--------------------------------------
inline
unsigned int little_endian(unsigned int i32Native)
{
if (!big_endian())
{
return i32Native;
}
return swap_endian(i32Native);
}
//--------------------------------------
inline
int little_endian(int ui32Native)
{
if (!big_endian())
{
return ui32Native;
}
return swap_endian(ui32Native);
}
//--------------------------------------
inline
short native_endian(short i16, bool bBigEndian)
{
if (big_endian() != bBigEndian)
{
return swap_endian(i16);
}
return i16;
}
//--------------------------------------
inline
unsigned short native_endian(unsigned short ui16, bool bBigEndian)
{
if (big_endian() != bBigEndian)
{
return swap_endian(ui16);
}
return ui16;
}
//--------------------------------------
inline
unsigned int native_endian(unsigned int i32, bool bBigEndian)
{
if (big_endian() != bBigEndian)
{
return swap_endian(i32);
}
return i32;
}
//--------------------------------------
inline
int native_endian(int ui32, bool bBigEndian)
{
if (big_endian() != bBigEndian)
{
return swap_endian(ui32);
}
return ui32;
}
//} // namespace xxx
#endif // ENDIAN_HPP
|
