Re: [boost] [math] Does any one interesting in calculating derivative for a expression automatically?

Subject: Re: [boost] [math] Does any one interesting in calculating derivative for a expression automatically?
From: Bruno Lalande (bruno.lalande_at_[hidden])
Date: 2009-03-05 03:45:17

Hi,

>   yes, It's technically feasible. but the type of all the symbol in the
> expression can not be the build-in type.
> and gamma function should be a special version.

Yes there would be a special version and maybe several versions for
each function. For example a binary function would have a rt/rt
version if both arguments are runtime, ct/rt if the first one is
compile-time, rt/ct if the second one is compile-time, and a ct/ct
metafunction is both are compile-time. A compile-time argument would
be either a literal constant (int_<X>) or an expression whose
terminals are only literal constants.

It's a huge work I know, but the exercise is pretty interesting :-)

>  BTW: I do not know how to upload source to this system, do you know how to
> do that?

You can ask a sandbox SVN access and work in it, or upload a zip to
the Boost Vault.

The following discussion from Boost-users seems to be related to what
you're trying to do:
http://article.gmane.org/gmane.comp.lib.boost.user/44237

Bruno