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Tom Lane 3804539e48 Replace random(), pg_erand48(), etc with a better PRNG API and algorithm. ... Standardize on xoroshiro128** as our basic PRNG algorithm, eliminating a bunch of platform dependencies as well as fundamentally-obsolete PRNG code. In addition, this API replacement will ease replacing the algorithm again in future, should that become necessary. xoroshiro128** is a few percent slower than the drand48 family, but it can produce full-width 64-bit random values not only 48-bit, and it should be much more trustworthy. It's likely to be noticeably faster than the platform's random(), depending on which platform you are thinking about; and we can have non-global state vectors easily, unlike with random(). It is not cryptographically strong, but neither are the functions it replaces. Fabien Coelho, reviewed by Dean Rasheed, Aleksander Alekseev, and myself Discussion: https://postgr.es/m/alpine.DEB.2.22.394.2105241211230.165418@pseudo		4 years ago
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expected	Redesign tablesample method API, and do extensive code review.	10 years ago
sql	Redesign tablesample method API, and do extensive code review.	10 years ago
.gitignore	…
Makefile	Split all OBJS style lines in makefiles into one-line-per-entry style.	6 years ago
tsm_system_time--1.0.sql	Redesign tablesample method API, and do extensive code review.	10 years ago
tsm_system_time.c	Replace random(), pg_erand48(), etc with a better PRNG API and algorithm.	4 years ago
tsm_system_time.control	Mark some contrib modules as "trusted".	5 years ago