On Mon, 10 Nov 2003, Herbert Graf wrote:

> say I have an int number
> I want the upper 16 bits of this number

I assume you meant upper 8 bits?

unsigned char c;
int i;

c = i >> 8;

generates optimal code.  So will a union, but the above is more
portable.

> right now I'm doing it like this:
> (char)(number/256)

If "number" is an unsigned int, it will also generate optimal code;
i.e., it doesn't actually do a division.

--
John W. Temples, III

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