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 Author Topic: Calculating total bitcoins by number of blocks generated  (Read 2663 times)
mizerydearia
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Activity: 574

 July 22, 2010, 01:58:53 AM

freenode / #math
Quote
<necrodearia>http://pastebin.com/MJPr8K9d is a PHP script I wrote that calculates the output I'm looking for in http://nullvoid.org/formula.html but I would like to know if there is a one line math formula that can produce the same.
<meingtsla> necrodearia: not sure about a single-line math formula, but you could do the integer division of y by 210000 (call it yQuotient) and use that to compute 210000*(50+25+...+50/2^yInt).  (that's a geometric series.)  then you can take the remainder of that division, call it yRemainder, and find yRemainder * 50/2^(yQuotient+1).
<meingtsla> not gonna flesh it out in code myself, i'll leave that to you :p
<meingtsla> sorry, wherever i said y it should be x.  (integer division of x by 210000.... xQuotient... 50/2^xQuotient... xRemainder)

Here's the script in action:
http://nullvoid.org/bitcoin/blockcalc.php?b=1
http://nullvoid.org/bitcoin/blockcalc.php?b=210000
http://nullvoid.org/bitcoin/blockcalc.php?b=1000000
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