#5098: [with patch, with positive review, needs doctest fix] Pollard rho
algorithm
for generic discrete logarithm
-------------------------+--------------------------------------------------
Reporter: ylchapuy | Owner: tbd
Type: enhancement | Status: new
Priority: minor | Milestone: sage-3.3
Component: algebra | Resolution:
Keywords: |
-------------------------+--------------------------------------------------
Changes (by mabshoff):
* summary: [with patch, with positive review] Pollard rho algorithm for
generic discrete logarithm => [with patch, with
positive review, needs doctest fix] Pollard rho
algorithm for generic discrete logarithm
Comment:
The latest patch causes the following doctest failure: From
{{{
File
"/scratch/mabshoff/sage-3.3.alpha4/devel/sage/sage/rings/integer_mod.pyx",
line 444:
sage: sage.groups.generic.discrete_log(a,b)
Expected:
Traceback (most recent call last):
...
ZeroDivisionError: Inverse does not exist.
}}}
we get to
{{{
ArithmeticError: multiplicative order of 4 not defined since it is not a
unit modulo 100
}}}
William doesn't like either one, but he is about to comment himself.
Cheers,
Michael
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5098#comment:12>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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