Re: scm_bits_t / scm_ubits_t

[Michael Livshin]

Dirk Herrmann <address@hidden> writes:

> > [1] Ooh,  won't it be  nice when we  have C99 widely  available?  Then
> >     scm2u?int and u?int2scm can work for all integer types!
> > 
> >     intmax_t  scm2int(SCM);
> >     uintmax_t scm2uint(SCM);
> >     SCM       int2scm(intmax_t);
> >     SCM       uint2scm(uintmax_t);
> > 
> >     For u?int2scm,  the compiler  will take  care of  promoting types.
> >     For scm2u?int,  the programmer just  compares the result  with tbe
> >     appropriate constant.
> > 
> >       int intfunc(...) {
> >           intmax_t n;
> >           ...
> >           n = scm2int(aNumber);
> >           if (n < INT_MIN || n > INT_MAX) 
> >                   boom();
> >           else
> >                   return n;
> >       }
> > 
> >    Gee, I wonder if  we could do this now by  defining intmax_t and so
> >    on  ourselves, or  by using  our own  typedef for  ``biggest native
> >    integer''.
> 
> That's a good suggestion.

how is that better than the current (in CVS) arrangement where you
have scm2int, scm2long, scm2size, scm2ptrdiff, scm2short ....?  beats
the need to manually check the result, I think.

(will have to add such converters for all the other important integral
 types, but that's mostly automated and very easy).

-- 
I'm on a seafood diet -- I see food and I eat it.           -- anonymous