// In header: <boost/random/ranlux.hpp> typedef discard_block_engine< ranlux64_base, 389, 24 > ranlux64_4;
The ranlux family of generators are described in
"A portable high-quality random number generator for lattice field theory calculations", M. Luescher, Computer Physics Communications, 79 (1994) pp 100-110.
The levels are given in
"RANLUX: A Fortran implementation of the high-quality pseudorandom number generator of Luescher", F. James, Computer Physics Communications 79 (1994) 111-114