Niels schrieb:
Hi,
I have a problem I can solve with some loops and if-thens, but I'm sure it
can be done with bit operations -- that would be prettier. I've tried to
work it out on paper, but I keep missing the final solution. Maybe I'm
missing something obvious...
The problem: A function tries to update an existing value, but is only
allowed to write certain bits.
There are 3 variables:
A: the existing value, eg. 10110101
B: what the function wants to write, eg. 01011100
C: which bits the function is allowed to write, eg. 00001111
With these examples, 10111100 should be written.
How do I combine A, B and C to get that result?
addition probably?
Btw. the result of the addition would be : 111010101
Barry
--
Smileys rule (cX.x)C --o(^_^o)
Dance for me! ^(^_^)o (o^_^)o o(^_^)^ o(^_^o)
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
