Your Opinion about Jean-Marc Baillard's RNGs

[John Keith]

Note that though it references the well-known formula xn+1 = FRC ( 9821 xn + 0.211327 ), his program 1 is actually xn+1 = FRC ( 9^8 xn + 0.236067977 ).

Programs 1 and 2 both sound interesting. As Jean-Marc's post is 13 years old, I wonder if anyone has tested these RNG's using Knuth's spectral test or other methods?

John