#4199: Followup to #4111: pari related real_mpfr.pyx doctest failure
----------------------+-----------------------------------------------------
Reporter: mabshoff | Owner: robertwb
Type: defect | Status: new
Priority: blocker | Milestone: sage-3.1.3
Component: coercion | Keywords:
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After merging the patches from #4111 the following happens in Sage
3.1.3.alpha2:
{{{
sage -t -long devel/sage/sage/rings/real_mpfr.pyx
**********************************************************************
File "/scratch/mabshoff/release-cycle/sage-3.1.3.alpha2/tmp/real_mpfr.py",
line 1900:
sage: RR(-1.234567)._pari_()
Expected:
-1.2345670000000000000
Got:
-1.2345670000000000001
**********************************************************************
1 items had failures:
1 of 11 in __main__.example_58
***Test Failed*** 1 failures.
For whitespace errors, see the file /scratch/mabshoff/release-
cycle/sage-3.1.3.alpha2/tmp/.doctest_real_mpfr.py
[11.2 s]
exit code: 1024
}}}
RobertWB says:
Actually, after those patches I get
{{{
sage: 1.2.parent() is RR
True
}}}
Sit looks like a pari issue for sure. For example, I get
{{{
sage: (-1.23456)._pari_()
-1.2345600000000000001
}}}
which isn't using RR.__call__ at all.
Alex Ghitza claims that #4096 (which is also wanted for 3.1.3) will fix
the issue.
Cheers,
Michael
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4199>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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