| Description: | This code provides an implementation of the PCG family of random number
generators, which are fast, statistically excellent, and offer a number of
useful features.
Full details can be found at the PCG-Random website
(http://www.pcg-random.org/). This version of the code provides many family
members – if you just want one simple generator, you may prefer the minimal C
version of the library.
There are two kinds of generator, normal generators and extended generators.
Extended generators provide k dimensional equidistribution and can perform
party tricks, but generally speaking most people only need the normal
generators.
There are two ways to access the generators, using a convenience typedef or by
using the underlying templates directly (similar to C++11’s std::mt19937
typedef vs its std::mersenne_twister_engine template). For most users, the
convenience typedef is what you want, and probably you’re fine with pcg32 for
32-bit numbers. If you want 64-bit numbers, either use pcg64 (or, if you’re on
a 32-bit system, making 64 bits from two calls to pcg32_k2 may be faster). |
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