This code will find a high precision of pi. It is pretty fast, 1000 digits in less than 5 seconds(result from my server). If your computer is powerful enough, it will find infinite amount of decimal of pi. By : Mgccl <?php //To use the code, input bcpi($precision) //$precision is a interger //Made by Chao Xu //At http://www.webdevlogs.com function bcfact($n){ return ($n == 0 || $n== 1) ? 1 : bcmul($n,bcfact($n-1)); } function bcpi($precision){ $num = 0;$k = 0; bcscale($precision+3); $limit = ($precision+3)/14; while($k < $limit){ $num = bcadd($num, bcdiv(bcmul(bcadd('13591409',bcmul('545140134', $k)),bcmul(bcpow(-1, $k), bcfact(6*$k))),bcmul(bcmul(bcpow('640320',3*$k+1),bcsqrt('640320')), bcmul(bcfact(3*$k), bcpow(bcfact($k),3))))); ++$k; } return bcdiv(1,(bcmul(12,($num))),$precision); } ?> | DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware. |
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