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I Chose No Name <MUDaholic@AOL.COM> writes: > 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? Assuming you have a number of the form (1 << n): int first_bit(unsigned int v) { int i; for (i = 0; i < 32; i++) if (v & (1 << i)) return i; return -1; } Basically what you're wanting to do is take the base 2 logarithm of a number of the form 2^n. The above is the easiest way, bit if you have something like (1 << 4) | (1 << 2), then it will return 2. -- James Turner turnerjh@pattern.net UIN: 1102038 http://www.vuse.vanderbilt.edu/~turnerjh/ +------------------------------------------------------------+ | Ensure that you have read the CircleMUD Mailing List FAQ: | | http://democracy.queensu.ca/~fletcher/Circle/list-faq.html | +------------------------------------------------------------+

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