797. ranlux48 returns wrong value

Section: 29.6.5 [rand.predef] Status: NAD Submitter: P.J. Plauger Opened: 2008-02-09 Last modified: 2016-02-10

Priority: Not Prioritized

View all other issues in [rand.predef].

View all issues with NAD status.

Discussion:

The 10,000th value returned by ranlux48 is supposed to be 249142670248501. We get 88229545517833. (Note that this depends on ranlux48_base.)

[ Bellevue: ]

Submitter withdraws defect.

Proposed resolution:

Change 29.6.5 [rand.predef]/p6:

typedef discard_block_engine<ranlux48_base, 389, 11> 
        ranlux48

Required behavior: The 10000th consecutive invocation of a default-constructed object of type ranlux48 shall produce the value 249142670248501 88229545517833.