Implementing xoshiro256** in PL/SQL
A long time ago I ported the Mersenne Twister pseudo-random number generator to pl/sql. That algorithm, and my port, are showing their age so I started looking at other generators. A newer approach is found in the xoshiro/xoroshiro family by David Blackman and Sebastiano Vigna found here. I’ve chosen xoshiro256** as one of their “all-purpose,…