Bitwise operations and md4digest function
alex at tweedly.net
Wed Nov 23 17:26:32 CST 2005
Sean Shao wrote:
> Alejandro, if you are using Rev 2.5.x or lower, Rev can't do any math
> with numbers larger than 0xFFFFFFF (7 F's) Rev 2.6 and greater can (I
> don't know the limits as I only needed 0xFFFFFFFF (8 F's)) I'm having
> similiar problems with bit math and am looking at rolling my own..
It can do some arithmetic above 0xFFFFFFF (7 Fs)
For instance, in 2.5 and 2.2.1 I can do
put format("%x", 2^31 + 5) ----> 80000005
(i.e. it has successfully taken an addition into the range above INT32)
put format("%08x %u", 2^32 / 2^30, 2^32 / 2^30) ---> 00000004 4
I'd be interested to hear what things you had trouble with ...
Alex Tweedly http://www.tweedly.net
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