[Rd] User-defined RNG with the standalone Rmath library

[Mark Clements]

As a follow-up: I provide examples using the standalone Rmath library with the Mersenne Twister RNG at https://gist.github.com/mclements/3668c89d73e4504f323ca57a71c65602 and https://github.com/mclements/rmath_mt/

Note that rwilcox() uses R_unif_index(), which needs to be re-defined so that the [dpqr]wilcox functions are available when using a user-defined RNG. The sections in the R manuals describing the standalone Rmath library could note this need.

The code above compiles on Ubuntu 22.04 LTS on x86_64 using both src/nmath/standalone/* and using the r-mathlib package on Debian.

-- Mark


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