[GiNaC-list] How can I get the values of the solved vars from the returned expression from lsolve?

[Vladimir V. Kisil]

Hi,
I usually do as follow: first store the list produced by lsolve as L, then
use a.subs(L) as the value of a. For a cleaner code you may wish to add a
check that the result is indeed a numeric and no exception occured.
Best wishes.
Vladimir
On Oct 11, 2012 11:19 PM, "Zach" <refinedcode at gmail.com> wrote:

> Hi I stumbled across this incredibly useful library and I wanted to use
> the lsolve function.  I was reading the tutorial pdf to figure out how to
> use it.  So from lsolve i end up with an expression like:
>
> *{a==3,b==4}
>> *
>
>
> I was wondering how I could get a value of the a and b symbols from this?
> I would ideally like to store them in an int to use in another library.  I
> have been looking for an answer for a while so I would really appreciate if
> anyone knows?  I could parse it like a string but Im assuming there is a
> better way?
>
> Thank you for your time,
> Zach
>
>
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