pandory500/SDL-mirror
2
0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.

Browse source 
--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402031
This commit is contained in:
Ryan C. Gordon 2006-08-24 12:49:59 +00:00
parent 3c0e34ea51
commit aebbf8cb6e
1 changed files with 14 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

14
include/SDL_endian.h
View file

@ -192,21 +192,35 @@ SDL_Swap64(Uint64 x)
#endif /* SDL_HAS_64BIT_TYPE */
static __inline__ float
SDL_SwapFloat(float x)
{
union { float f; Uint32 ui32; } swapper;
swapper.f = x;
swapper.ui32 = SDL_Swap32(swapper.ui32);
return swapper.f;
}
/* Byteswap item from the specified endianness to the native endianness */
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
#define SDL_SwapLE16(X) (X)
#define SDL_SwapLE32(X) (X)
#define SDL_SwapLE64(X) (X)
#define SDL_SwapFloatLE(X) (X)
#define SDL_SwapBE16(X) SDL_Swap16(X)
#define SDL_SwapBE32(X) SDL_Swap32(X)
#define SDL_SwapBE64(X) SDL_Swap64(X)
#define SDL_SwapFloatBE(X) SDL_SwapFloat(X)
#else
#define SDL_SwapLE16(X) SDL_Swap16(X)
#define SDL_SwapLE32(X) SDL_Swap32(X)
#define SDL_SwapLE64(X) SDL_Swap64(X)
#define SDL_SwapFloatLE(X) SDL_SwapFloat(X)
#define SDL_SwapBE16(X) (X)
#define SDL_SwapBE32(X) (X)
#define SDL_SwapBE64(X) (X)
#define SDL_SwapFloatBE(X) (X)
#endif
/* Ends C function definitions when using C++ */