Boost C++ Libraries: Ticket #387: MT seed algorithm needs fix applied

jmaurer — Mon, 11 Apr 2005 09:22:13 GMT

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Thank you for the information. As has been pointed out in
the e-mail thread linked to above, the boost.random library
is now actually part of the C++ library TR, and changing the
default constructor or zero-argument seed function is no
longer feasible: People expect source-code compatibility.
The proper way is to add an additional, overloaded seed()
function that has the new semantics.

status changed

oblomovska — Mon, 11 Apr 2005 10:29:10 GMT

status assigned → closed

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Thanks for the information. We have already done as you
suggested, I was hoping we could delete that code from our
systems with the next boost release.
I am completely unaware of what the C++ library TR is, and
this is probably the wrong platform for a discussion, but
FYI: we use random numbers for Monte Carlo simulations, and
for us, the bug a quite a serious one. I think a warning in
the documentation would be appropriate.
boost.random is great work, by the way. Thanks!

jmaurer — Mon, 11 Apr 2005 12:17:32 GMT

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The C++ library TR is a technical report that the C++
standardization committee is currently working on.
I understand the seriousness of the issue, and I will
provide wording to the standardization committee to fix the
issue.