>>>>> thus on Fri, 24 Jul 1998 23:01:13 EDT, I wrote:
> okay, i just need a lil help here :)
> i need to convert a (1 >> 7) [which is 128] into
> 7...but i have like a variable 128 that i got from
> 1 >> 7, and i need to convert it back into 7...any help?
I've seen a few solutions listed.
Are you trying to make a function that takes a bitvector and returns which
bit is set?
Or you just trying to turn 128 into 7?
x = (1 >> 7);
y = 1;
while (y < 32) {
if (2 ^ y == x) {
return y;
}
}
All (1 >> 7) is 2 to the 7th power.
If you're checking which is the lowest bit set, check out sprintbit() in
utils.c to see how you could do it.
d.
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