Mir Random [WIP]

[Joseph Rushton Wakeling via Digitalmars-d]

On Tuesday, 22 November 2016 at 06:31:45 UTC, Ilya Yaroshenko 
wrote:
>  - 64-bit Mt19937 is default for 64-bit targets

This means that seemingly identical code will produce different 
results depending on whether it's compiled for 64-bit or 32-bit.  
Is that really worth it, when anyone who cares about the 
difference between 32-bit vs. 64-bit random words is quite 
capable of specifying the RNG they want to use and not just 
relying on the default?

Having a different default RNG would make sense for targets where 
there are serious performance issues at stake (e.g. minimal 
memory available for RNG state) but just for the sake of 32- vs. 
64-bit Mersenne Twister seems an unnecessary complication.

These days it's debatable whether Mersenne Twister of _any_ word 
size is the optimal choice for a default RNG, so if the default 
is going to be changed, it might as well be to something 
significantly better (rather than worrying about numbers of bits).