"random" in Integer simply calls "random" in common lisp.

And I looked at common lisp standard (section 12.9, CLTL2),
the standard way to have a new seed is

)lisp (setf *random-state* (make-random-state t))

but the detail is implementation dependent.

That makes me to think we should have a standard random
number generator in FriCAS that is independent on underlying Lisp.


On Sat, Feb 23, 2019 at 10:08 PM Ralf Hemmecke <[email protected]> wrote:
>
> Hello,
>
> I use random(n)$Integer in a program and use that to generate a
> filename. Unfortunately, when I run that program in parallel, i.e., like
> two instances of
>
> cat prog.input | fricas -nosman
>
> it produces exactly the same random integer.
>
> Probably understandable, however I haven't found a way to give different
> seeds the random number generator.
>
> Any suggestion?
>
> In fact, I don't actually care about random numbers if only I get a
> unique filename to which I can add different extensions.
>
> Ralf
>
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