Apologies, I didn't realise that this list isn't meant for libxslt
internals but rather for XSLT in general.
On Thu, Jan 24, 2013 at 8:04 PM, Nils Werner
<nils(_dot_)werner(_at_)gmail(_dot_)com> wrote:
Hey,
I recently noticed that the current implementation of math:random()
repeatedly always produces the same random numbers.
After looking into the code and digging up a few messages from 2008
(http://comments.gmane.org/gmane.comp.gnome.lib.xml.general/13910) I
realised that the current implementation is missing its seed.
My modifications only apply to xsltproc itself. I figured that for now
software linking to libxslt may either already have run srand() itself
or may be required to do so in order to use the lib.
I also absolutely understand the need for a deterministic and
reproducible seed, so besides running srand(time(NULL)) once during
program startup I implemented a command line parameter --seed-rand
with wich the seed can be overridden manually.
The patch can be found at
https://github.com/nils-werner/libxslt/compare/master...seedrand.patch
Regards,
Nils Werner
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