I mean "default". type(5) f.e. среда, 15 января 2020 г., 16:15:08 UTC+3 пользователь Dima Pasechnik написал: > > On Wed, Jan 15, 2020 at 1:10 PM Александр Ватузов <amva...@gmail.com > <javascript:>> wrote: > > > > As I undestand, sage uses custom int > > no, Sage's int is the same as Python's int. But Sage has other integer > types, e.g. ZZ. > > > > > среда, 15 января 2020 г., 12:22:51 UTC+3 пользователь Dima Pasechnik > написал: > >> > >> On Tue, Jan 14, 2020 at 10:23 PM Nils Bruin <nbr...@sfu.ca> wrote: > >> > > >> > On Tuesday, January 14, 2020 at 5:36:27 AM UTC-8, Александр Ватузов > wrote: > >> >> > >> >> Now I constantly know, that problem was in using > >> >> > >> >> divmod(n, base**half) > >> >> > >> >> instead of > >> >> > >> >> n // (base**half), n % (base**half) > >> > > >> > > >> > The second option yields a performance regression relative to the > first, because you would end up doing an integer division twice rather than > one (integer division yields both the quotient and the remainder, so > throwing one away and then recomputing it to find it anyway is wasteful). > You're also performing an exponentiation twice. > >> > > >> > I think it would be better to find/write a "divmod" that works in py3 > as well. > >> > > >> it is a Sage-specfic bug, as simply installing mpmath into system > >> Python3 fails to reproduce the issue. > >> (or perhaps it's due to Cython, or a specific version of it) > >> Does Sage use a "custom" divmod in mpmath code? > >> > >> > >> > >> > -- > >> > You received this message because you are subscribed to the Google > Groups "sage-support" group. > >> > To unsubscribe from this group and stop receiving emails from it, > send an email to sage-s...@googlegroups.com. > >> > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/78a83c70-0f12-4df0-a2e4-d4a499b388bf%40googlegroups.com. > > > > > > -- > > You received this message because you are subscribed to the Google > Groups "sage-support" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sage-s...@googlegroups.com <javascript:>. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/596f9268-9a22-489a-9e18-fd049e9cee6c%40googlegroups.com. > > >
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