This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of C++11 status.
Section: 188.8.131.52 [rand.eng.mers] Status: C++11 Submitter: INCITS Opened: 2010-08-25 Last modified: 2016-01-28
Priority: Not Prioritized
View all other issues in [rand.eng.mers].
View all issues with C++11 status.
The Mersenne twister algorithm is meaningless for word sizes less than two, as there are then insufficient bits available to be “twisted”.
[ Resolution proposed by ballot comment: ]
Insert the following among the relations that are required to hold: 2u < w.
[ 2010 Batavia: The working group concurred with the issue's Proposed Resolution ]
[ Adopted at 2010-11 Batavia ]
Change 184.108.40.206 [rand.eng.mers] p. 4 as indicated:
4 The following relations shall hold: 0 < m, m <= n, r <= w, u <= w, s <= w, t <= w, l <= w, w <= numeric_limits<UIntType>::digits, a <= (1u<<w) - 1u, b <= (1u<<w) - 1u, c <= (1u<<w) - 1u, d <= (1u<<w) - 1u, and f <= (1u<<w) - 1u.