Duh! On Mon, Feb 1, 2021 at 9:42 AM d...@refined-audiometrics.com < d...@refined-audiometrics.com> wrote:
> (1- (integer-length x)) > > > On Feb 1, 2021, at 1:24 AM, Marco Antoniotti <marco.antonio...@unimib.it> > wrote: > > Hi > > I am wasti.... devoting some time to recreational hacking and I bumped > into an interesting bit fiddling operation. > > I pored over the CLHS, but, while I may have missed something obvious, I > am not sure what would be the best way to implement such a function using > the standard operations. > > Any ideas? > > Note that it appears that most HW does have an instruction to do that > directly. > Find first set - Wikipedia <https://en.wikipedia.org/wiki/Find_first_set> > > Thanks > Marco > > -- > Marco Antoniotti, Associate Professor tel. +39 - 02 64 48 79 01 > DISCo, Università Milano Bicocca U14 2043 http://bimib.disco.unimib.it > Viale Sarca 336 > I-20126 Milan (MI) ITALY > > > -- Marco Antoniotti, Associate Professor tel. +39 - 02 64 48 79 01 DISCo, Università Milano Bicocca U14 2043 http://bimib.disco.unimib.it Viale Sarca 336 I-20126 Milan (MI) ITALY