Oh, forgot the link: http://github.com/bo198214/hyperops/raw/157fa46ca4439d0e022c1c6249c5862d1d2569c2/formal_powerseries.py
Grateful for any comments. On Apr 6, 1:49 pm, Henryk Trappmann <bo198...@googlemail.com> wrote: > Now a new version is out, picklable, coerceable and 100% coverage, > though not comletely complete yet. > But getting it to pickle was really *some* effort, 60 inner functions > had to converted to "outer" classes, but now it works. > > However some strange effects occured with coercing: > sage: RR.coerce_map_from(QQ) != None > True > sage: RR.coerce_map_from(int) != None > True > sage: RR.coerce_map_from(Integer) != None > False > > Why is this? Same with QQ: > sage: QQ.coerce_map_from(Integer) != None > False > > Then in my formal powerseries module, I defined the _coerce_map_from_ > (self,T) in FormalPowerSeriesRing and > sage: FormalPowerSeriesRing(RR)._coerce_map_from_(RR) > True > > but despite _lmul_ and _rmul_ do not work with RR (though > _coerce_map_from_ is definitely called and returns True). > They work however with QQ as expected. Any hints? > Here the error: > > sage: FormalPowerSeriesRing(RR)([1,2,3]) * (2/3) > [0.666666666666667, 1.33333333333333, 2.00000000000000, 0, 0, 0, 0, 0, > 0, ...] > sage: FormalPowerSeriesRing(RR)([1,2,3]) * 2.0 > --------------------------------------------------------------------------- > TypeError Traceback (most recent call > last) > > /home/bo198214/.sage/temp/darkdepth/6006/ > _home_bo198214__sage_init_sage_0.py in <module>() > > /usr/src/sage-3.4-linux-Debian_GNU_Linux_5.0_lenny-x86_64-Linux/local/ > lib/python2.5/site-packages/sage/structure/element.so in > sage.structure.element.RingElement.__mul__ (sage/structure/element.c: > 8632)() > > /usr/src/sage-3.4-linux-Debian_GNU_Linux_5.0_lenny-x86_64-Linux/local/ > lib/python2.5/site-packages/sage/structure/coerce.so in > sage.structure.coerce.CoercionModel_cache_maps.bin_op (sage/structure/ > coerce.c:5848)() > > TypeError: unsupported operand parent(s) for '*': > 'FormalPowerSeriesRing over Real Field with 53 bits of precision' and > 'Real Field with 53 bits of precision' --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
