Normal distribution

[John Colvin via Digitalmars-d]

On Saturday, 20 February 2016 at 14:01:22 UTC, Andrei 
Alexandrescu wrote:
> Do we have a good quality converter of uniform numbers to 
> Gaussian-distributed numbers around? -- Andrei

There is this, from years ago: 
https://github.com/DlangScience/dstats/blob/master/source/dstats/random.d#L266
and the range wrappers also in that module.

There is also of course
https://github.com/WebDrake/hap/blob/master/source/hap/random/distribution.d#L507

But as you will remember from many messages from Joseph Rushton 
Wakeling, he's been blocked by difficulties with the range API, 
which also apply to the dstats version.