[pythran] Re: gmp

  • From: serge Guelton <serge.guelton@xxxxxxxxxxxxxxxx>
  • To: pythran@xxxxxxxxxxxxx
  • Date: Sat, 27 Oct 2012 23:56:21 +0200

> >Does it mean we have to make all arguments assignable ?
> The problem is not with assignable. For now, when we have a
> __gmp_expr<T,G>, Assignable say : "ho, I have a specialisation which
> say it is a mpz_class" but in fact, is is not really a mpz_class. It
> is for exemple a __gmp_expr<mpz_struct,
> gmp_binary<__gmp_expr<mpz_struct,mpz_struct>,double,binary_plus> >
> or something like this.
> As you can see, in fact this is the result of an addition between a
> double and a mpz_class and it should be a mpf_class because we can
> see a double in this expression. But it should be more complicated
> otherwise gmp developper may have fix this problem isn't it?

OK I got it. Pythran cast the result to long and python to float,
because we do not try to expand the __gmp_expr...


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