Mir Random [WIP]

[Ilya Yaroshenko via Digitalmars-d]

On Wednesday, 23 November 2016 at 13:26:41 UTC, Joseph Rushton 
Wakeling wrote:
> On Wednesday, 23 November 2016 at 13:03:04 UTC, Ilya Yaroshenko 
> wrote:
>> Added RandomRangeAdaptor for URBGs:
>> https://github.com/libmir/mir-random/blob/master/source/random/algorithm.d
>
> This has exactly the problem I identified above, though: you're 
> unnecessarily cacheing the latest variate rather than just 
> using the RNG state directly.  Not the biggest deal in the 
> world, but avoidable if you allow a separation between updating 
> RNG state and accessing it.

1. Current default RNG (Mt19937) has not state for the latest 
value.
2. The structure is allocated on stack and compilers can 
recognise loop patterns and eliminate addition memory movements 
for many cases.