#4214: [with patch, needs work] elliptic_logarithm gives inaccurate answers
---------------------------+------------------------------------------------
 Reporter:  AlexGhitza     |        Owner:  AlexGhitza
     Type:  defect         |       Status:  new       
 Priority:  major          |    Milestone:  sage-3.1.3
Component:  number theory  |   Resolution:            
 Keywords:                 |  
---------------------------+------------------------------------------------
Changes (by mabshoff):

  * summary:  [with patch, positive review] elliptic_logarithm gives
              inaccurate answers => [with patch, needs work]
              elliptic_logarithm gives inaccurate answers

Comment:

 Well, it seems like whack-a-mole:
 {{{
 sage -t -long devel/sage/sage/libs/pari/gen.pyx
 **********************************************************************
 File "/scratch/mabshoff/release-cycle/sage-3.1.3.rc0/tmp/gen.py", line
 4971:
     sage: e.ellpointtoz([0,0])
 Exception raised:
     Traceback (most recent call last):
       File "/scratch/mabshoff/release-
 cycle/sage-3.1.3.rc0/local/lib/python2.5/doctest.py", line 1228, in __run
         compileflags, 1) in test.globs
       File "<doctest __main__.example_175[3]>", line 1, in <module>
         e.ellpointtoz([Integer(0),Integer(0)])###line 4971:
     sage: e.ellpointtoz([0,0])
       File "gen.pyx", line 4958, in sage.libs.pari.gen.gen.ellpointtoz
 (sage/libs/pari/gen.c:18454)
     TypeError: function takes exactly 2 arguments (1 given)
 **********************************************************************
 File "/scratch/mabshoff/release-cycle/sage-3.1.3.rc0/tmp/gen.py", line
 4975:
     sage: e.ellpointtoz([0])
 Exception raised:
     Traceback (most recent call last):
       File "/scratch/mabshoff/release-
 cycle/sage-3.1.3.rc0/local/lib/python2.5/doctest.py", line 1228, in __run
         compileflags, 1) in test.globs
       File "<doctest __main__.example_175[4]>", line 1, in <module>
         e.ellpointtoz([Integer(0)])###line 4975:
     sage: e.ellpointtoz([0])
       File "gen.pyx", line 4958, in sage.libs.pari.gen.gen.ellpointtoz
 (sage/libs/pari/gen.c:18454)
     TypeError: function takes exactly 2 arguments (1 given)
 **********************************************************************
 }}}

 Cheers,

 Michael

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4214#comment:8>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of 
Reinventing the Wheel
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