Rand

A simple thread-safe API for a Go implementation of Melissa O'Neill's excellent PCG pseudorandom number generator, which is well-studied, excellent, and fast both to create and in execution. This repository contains a fork of MichaelTJones/pcg code and adds a pooling of random number generators.

⚠️ Alternative: Scalable, hash-based alternative can be found in kelindar/xxrand.

Features

• Optimized for speed.
• Performance scales on multiple CPUs.

Benchmark results

BenchmarkRand/Uint32-8         	566756457	         2.02 ns/op	       0 B/op	       0 allocs/op
BenchmarkRand/Uint32n-8        	478460296	         2.56 ns/op	       0 B/op	       0 allocs/op
BenchmarkRand/Float32-8        	406576479	         2.98 ns/op	       0 B/op	       0 allocs/op
BenchmarkRand/Uint64-8         	469784265	         2.71 ns/op	       0 B/op	       0 allocs/op
BenchmarkRand/Uint64n-8        	273879046	         4.50 ns/op	       0 B/op	       0 allocs/op
BenchmarkRand/Float64-8        	396292614	         3.10 ns/op	       0 B/op	       0 allocs/op
BenchmarkMathRandInt31n-8   	29865824	        40.2 ns/op	       0 B/op	       0 allocs/op