David Bélanger
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 Dec 25 awarded Student Dec 25 accepted Need help to create a formula for a game Dec 25 asked Need help to create a formula for a game Jan 25 awarded Scholar Jan 25 comment I need a simple algorithm Final PHP Code : $Y = ceil( pow(2, log(($X / 10) * 4, 2)) / 2); Jan 25 accepted I need a simple algorithm Jan 25 awarded Supporter Jan 25 comment I need a simple algorithm Yeah so N = log2((X / 10) * 4) so .. Y = 2^N... Ok it is working but only problem is I get a base 2 higher then what I wanted but... I just devide by 2 at the end. Working like a charm. Thanks a lot all of you ! Jan 25 comment I need a simple algorithm Here's is what I did : log((\$X / 10) * 4, 2) ^ 2 Right ? The , 2` will use base 2 of log Jan 25 comment I need a simple algorithm Something that I can run on a computer. I'm really no expert. Like X + 2 or f(x) = 2(x-2) - 1. etc... you can use function or whatever you need. Jan 25 awarded Autobiographer Jan 25 asked I need a simple algorithm