[PURRS-devel] [Fwd: Re: Question about giac.]

Tatiana Zolo zolo at cs.unipr.it
Wed Oct 15 14:17:56 CEST 2003

-------- Original Message --------
Subject: Re: Question about giac.
Date: Wed, 15 Oct 2003 12:49:27 +0200 (MET DST)
From: Bernard Parisse <Bernard.Parisse at ujf-grenoble.fr>
To: Tatiana Zolo <zolo at cs.unipr.it>

> Dear Bernard,
> I'm studying how it is possible to use your library for the
> factorization.
> I have some of questions:

> 1) I want to install only the necessary libraries for my aims.
>      I already have GMP and NTL and so I think would be enough
>      GIAC in order to the factorization on rationals, is it true?
>      (I do not work with floating point numbers and I am not interested
>      on graphic's tools.)
>     The installation's process is finished well, even if I have again
>      a doubt: what is DL support which by default is setted to `yes'?

DL support is for dynamic insertion of libraries in a running
session of giac/xcas, you can keep giac configure guess safely

> 2) The second question is about the input of an object of the type
> `gen':
>       in the little program attached you can see that the use of `n*5'
>       instead of `5*n' caused an ambiguity for operator*.
>       It seems very strange for me this behavior... Is it wanted?

the reason is that I did not overload gen*int, only int*gen,
you can use n*gen(5) to force the conversion int -> gen

Bernard Parisse

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