We provide a new random number generator (RNG) with this package, available both
in Fortran90 and C++.
It resides in src/f90/mod/rngmod.f90 and src/cxx/cxxsupport/planck_rng.h and supersedes the previous RNG (which
is still available at src/f90/mod/ran_tools_dist.f90).
It produces double precision real numbers x with and is based
on a xorshift method described by Marsaglia in
Journal of Statistical Software 2003, vol 8
It accepts up to four different seeds simultaneously, allowing each sequence to
theoretical period of
. A Gaussian deviate RNG is
also provided. See the respective routines documentation for details on their usage.
Please note that we have not extensively tested this generator
-- it did not represent the main drive of this project.