criterium.well documentation
bit-shift-right-ns
[a b]
A bit shift that doesn't do sign extension.
unsign
[x]
Convert a result based on a signed integer, and convert it to what it would have been for an unsigned integer.
well-rng-1024a
[]
[state index]
Well RNG 1024a See: Improved Long-Period Generators Based on Linear Recurrences Modulo 2 F. Panneton, P. L'Ecuyer and M. Matsumoto http://www.iro.umontreal.ca/~panneton/WELLRNG.html