https://www.pcg-random.org/other-rngs.html#arc4random https://www.pcg-random.org/other-rngs.html#arc4random explains what they meant: > The BSD implementations

https://www.pcg-random.org/other-rngs.html#arc4random https://www.pcg-random.org/other-rngs.html#arc4random explains what they meant: > The BSD implementations (which are the only widely used ones) have several additional issues > • No facility for a user-provided seed, preventing programs from getting reproducible results > • Periodically “stirs” the generator using kernel-provided entropy; this code must be removed if reproducible results desired (and is removed from the C++ adaptation I created for testing purposes)