where can i find the byteswap macros i.e. Endian32_Swap() in IOS4.3?

I'm porting a project from mac os to iphone 开发者_StackOverflowos. I can't seem to find Endian32_Swap() etc anywhere.

thanks,

oli

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it doesn't have byteswap.h and Endian32_Swap() etc

i'm using

#include <libkern/OSByteOrder.h>

OSSwapInt32(x)

instead