Re: unpicking Mod

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

* Igor Schein [2005-12-28 16:46]:
> On Wed, Dec 28, 2005 at 12:50:20AM -0500, Mak Trifkovic wrote:
> > Say a=Mod(b,c).  Now I can retrieve b from a simply by b=lift(a).  But how 
> > do I get c?
> 
> component(a,1)

In the unstable branch, one should access an object components
via member functions, rather than by (memorizing and) assuming
a particular layout: try a.mod instead.

Besides, it's faster:

  (14:42) gp > for(i=1, 10^6, component(a,1))
  time = 582 ms.

  (14:42) gp > for(i=1, 10^6, a.mod)
  time = 327 ms.

Cheers (and a happy new year to all),

    Karim.
-- 
Karim Belabas                  Tel: (+33) (0)5 40 00 26 17
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