Hi sage-devel, Using sage-5.0, it appears that (-1 % 2) gets different values if it is in a python file (=1), in a attached cython file (=1) or in a cython file in the sage tree (= -1) !
Add the following three lines to sage/combinat/partition.py : +aaa = -1 +tmp = aaa % 2 +print "In sage/combinat/partition.py : -1 % 2 is ", tmp Add the following three lines to sage/combinat/partitions.pyx : +cdef int aaa = -1 +tmp = aaa % 2 +print "In sage/combinat/partitions.pyx : -1 % 2 is ", tmp Then : ---------------------------------------------------------------------- | Sage Version 5.0, Release Date: 2012-05-14 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- In sage/combinat/partition.py : -1 % 2 is 1 In sage/combinat/partitions.pyx : -1 % 2 is -1 sage: Also, if this is file.pyx : # this is file.pyx cdef int aaa = -1 tmp = aaa % 2 print "In attached file.pyx : -1 % 2 is ", tmp then: sage: attach /tmp/file.pyx Compiling /tmp/file.pyx... In attached file.pyx : -1 % 2 is 1 This -1 in sage library .pyx file is quite surprising to me. Is this a known issue? Sébastien -- -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
