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Re: Extremely poor performance crunching random numbers under PIV-FC5



On Fri, May 19, 2006 at 11:03:58AM +0100, Andy Green wrote:
> >You need to make sure *randomdataState is zero initialized before calling
> >initstate_r for the first time.  So, e.g. add
> >memset (randomdataState, 0, sizeof (*randomdataState));
> >here.
> 
> How can one discover this knowledge?  There seems to be no manpage and 
> Google did not describe this as well as it usually does.

Comments in the source?
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/stdlib/random.c?cvsroot=glibc
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/stdlib/random_r.c?cvsroot=glibc

There is some (limited) info in
info random_r
too, feel free to submit documentation patches to make stuff more clear.

	Jakub


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