Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Re: Random numbers are not random enough on Windows

by GrandFather (Sage)
on Oct 28, 2009 at 10:19 UTC ( #803633=note: print w/ replies, xml ) Need Help??


in reply to Random numbers are not random enough on Windows

Perl's rand uses the C run time rand provided by the compiler. Often such pseudo-random number generators perform very poorly and the Microsoft one provided by the compiler used to build ActiveState's Perl offering is a case in point.

However, it's a problem that is easily fixed. Just use Math::Random::MT qw(srand rand); and the problem goes away regardless of how your Perl was built.


True laziness is hard work


Comment on Re: Random numbers are not random enough on Windows

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://803633]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others examining the Monastery: (2)
As of 2015-07-28 04:07 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (252 votes), past polls