[erlang-questions] Gaussian Distribution

[Richard O'Keefe]

> On Mon, Oct 29, 2012 at 5:59 AM, Frank Recker <frank.recker@REDACTED> wrote:
>> Your points are correct, but I had reasons for my design choices.
>> 
>> - math:erf/1 was not available in my windows version of erlang
>> 
>> - under linux math:erf/1 delivers the value 1 for large x (x>7), which is
>> problematic. The exact value is always in the open interval (-1,1).

This is floating-point we are talking about.
For sufficiently large x, the closest floating point number WILL
be 1, like it or not.  erf() is doing the best it possibly can.