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serv-inc / norminv.js
Last active March 13, 2016 15:36 — forked from esarbe/norminv.js
Compute the quantile function for the normal distribution. - like Excel NORMINV
/// Original C++ implementation found at http://www.wilmott.com/messageview.cfm?catid=10&threadid=38771
/// C# implementation found at http://weblogs.asp.net/esanchez/archive/2010/07/29/a-quick-and-dirty-implementation-of-excel-norminv-function-in-c.aspx
/*
* Compute the quantile function for the normal distribution.
*
* For small to moderate probabilities, algorithm referenced
* below is used to obtain an initial approximation which is
* polished with a final Newton step.
*
* For very large arguments, an algorithm of Wichura is used.