Re: bit-extract seems broken.

[Dirk Herrmann]

On 19 Dec 2000, Jim Blandy wrote:

> 
> Dirk Herrmann <address@hidden> writes:
> > On 18 Dec 2000, Rob Browning wrote:
> > > 
> > >   guile> (bit-extract #b111110100000 0 32)
> > >   0
> > >   guile>
> > > 
> > > or can it not return more than a limited range?
> > 
> > I just wanted to fix it, but realized that it is not really clear to me
> > what bit-extract should do with negative numbers.  Opinions?  Should we
> > for example only allow non-negative arguments?
[...]
> Negative values for the @var{start} and @var{end} arguments to
> bit-extract aren't meaningful, as they index bits the value doesn't
> have.  A negative start or end should be an error.

Right, but what about extracting bits from a negative number?

Best regards,
Dirk Herrmann