Re: Missing bnf functions

[Karim Belabas <Karim.Belabas@math.u-bordeaux1.fr>]

* Malcolm Bovey [2012-06-24 03:25]:
> I'm having trouble running some code on a Mac OS X (v 10.6.8) installation.   I downloaded and compiled the latest stable version of PARI-GP (2.5.1) - this seemed to be successful.  However, PARI doesn't seem to know about some internal functions that it should do.  For example, when I try using bnfclassunit, I get
> 
> bnfclassunit(x^2-5)
>   ***   at top-level: bnfclassunit(x^2-5)
>   ***                 ^-------------------
>   ***   not a function in function call
>   ***   Break loop: type 'break' to go back to GP
> 
> bnfinit seems to work fine.
> 
> Any suggestions as to what's going wrong here?

These functions are gone (deemed useless), since version 2.4.

>From the "COMPAT" file:

  - remove obsolete GP functions bnfclassunit, bnfreg, bnfclgp, bnfunit.
    Use bnfinit.


These function were no faster than bnfinit() and yielded much less information.
The recommended idiom is now

  K = bnfinit(x^2 - 5)

then member functions K.clgp, K.fu, etc. (cf "?.").

Cheers,

    K.B.
-- 
Karim Belabas, IMB (UMR 5251)  Tel: (+33) (0)5 40 00 26 17
Universite Bordeaux 1          Fax: (+33) (0)5 40 00 69 50
351, cours de la Liberation    http://www.math.u-bordeaux1.fr/~belabas/
F-33405 Talence (France)       http://pari.math.u-bordeaux1.fr/  [PARI/GP]
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