Re: Further 64 bit bits.

[Marius Vollmer]

Dirk Herrmann <address@hidden> writes:

> On 14 Sep 2001, Marius Vollmer wrote:
> 
> > Rob Browning <address@hidden> writes:
> > 
> > > With respect to make check, is there any way to ask how many bits are
> > > in a fixnum from the guile level?
> > 
> > This
> > 
> >     (inexact->exact (+ (/ (log (+ most-positive-fixnum 1)) (log 2)) 1))
> > 
> > ought to work.
> 
> I wonder if from the scheme level it is wise to expect fixnums to be
> implemented this way, i. e. as a number that is represented with n
> bits.

Yes, theoretically, for an unknown implementation.  But I'd say that
for our test suite, the above is good enough since we know how our
fixnums are implemented.