ERRATA for the WELLRNG paper. ----------------------------- There are a few typos in the paper: Panneton, L'Ecuyer, and Matsumoto, ``Improved Long-Period Generators Based on Linear Recurrences Modulo 2'', ACM Transactions on Mathematical Software, 32, 1 (2006), 1-16. 1. The definition of M5 is incorrect in the paper; the shifts should be in the other direction. 2. In Table II, for the matrices M6, $s$ and $t$ should be permuted. For the correct definitions and tested implementations, please refer to the web page: http://www.iro.umontreal.ca/~panneton/WELLRNG.html Note also that the implementation technique differs for WELL44497a and WELL512a, for example. -- Francois Panneton and Pierre L'Ecuyer, September 2008