Normal/Gaussian random number generation for D

[bearophile]

Joseph Rushton Wakeling:

> Where would you like to see it placed?  std.math?

In Phobos there is also the std.bitmanip module, but for iLog2, 
isPow2, and few other bithacks std.math seems a better place:

http://graphics.stanford.edu/~seander/bithacks.html

Bye,
bearophile