On 12/28/21, Lev Maximov <lev.maxi...@gmail.com> wrote: > On Tue, Dec 28, 2021 at 3:43 PM Evgeni Burovski > <evgeny.burovs...@gmail.com> > wrote: > >> Very nice overview! >> >> One question and one suggestion: >> >> 1. Is integer wraparound guaranteed for signed ints, or is it an >> implementation detail? For unsigned ints, sure, it's straight from a C >> standard; what about signed types however. >> > Signed ints wraparound in just the same way as unsigned, both in C and in > NumPy. Added an illustration.
Overflow of *signed* ints in the C language is *undefined behavior*. In practice, most compilers might do what you expect, but the wrap-around behavior is not guaranteed and should not be relied on. Warren > > >> 2. It'd be nice to explicitly stress that dtype=float corresponds to a C >> double, not a C float type. This frequently trips people trying to >> interface with C or Cython (in my experience) >> > Done, thanks! > > Best regards, > Lev > _______________________________________________ NumPy-Discussion mailing list -- numpy-discussion@python.org To unsubscribe send an email to numpy-discussion-le...@python.org https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ Member address: arch...@mail-archive.com
