[Dev] byte swapper

[Ed Hill]

On Tue, 2002-05-28 at 21:00, Michael Mueller wrote:
> Is there a byte swapper for big-to-little, and vice-versa, endian interchange 
> lurking about, or shall I be forced to write yet another?

Hi Mike,

I've used these.

hth,
Ed



#ifdef LITTLE_ENDIAN

/* Little-endian architectures need byte-swapping. */
#define sws(x) (((x >> 8) & 0x00ff) | ((x << 8) & 0xff00))
#define swl(x) (sws(x >> 16) | (sws(x) << 16))
#define swap_short(x) (x = sws(x))
#define swap_long(x) (x = swl(x))

#else

/* Big-endian architectures don't need byte-swapping. */
#define sws(x) (x)
#define swl(x) (x)
#define swap_short(x) (x = sws(x))
#define swap_long(x) (x = swl(x))

#endif


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Edward H. Hill III, PhD    |  Email:       ed@eh3.com, ehill@mines.edu
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