#5129: numerical noise in roots calculus/calculus.py
----------------------+-----------------------------------------------------
Reporter: jsp | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-3.3
Component: calculus | Keywords:
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{{{
[j...@peace sage-3.3.alpha0]$ ./sage -t
"devel/sage/sage/calculus/calculus.py"
sage -t "devel/sage/sage/calculus/calculus.py"
**********************************************************************
File
"/home/jaap/Download/sage-3.3.alpha0/devel/sage/sage/calculus/calculus.py",
line 3206:
sage: f.roots(ring=CC)
Expected:
[(-0.0588115223184495, 1), (1.36050567903502 + 1.51880872209965*I,
1), (-1.33109991787579 + 1.52241655183732*I, 1), (1.36050567903502 -
1.51880872209965*I, 1), (-1.33109991787580 - 1.52241655183732*I, 1)]
Got:
[(-0.0588115223184495, 1), (1.36050567903502 + 1.51880872209965*I,
1), (-1.33109991787580 + 1.52241655183732*I, 1), (1.36050567903502 -
1.51880872209965*I, 1), (-1.33109991787580 - 1.52241655183732*I, 1)]
**********************************************************************
File
"/home/jaap/Download/sage-3.3.alpha0/devel/sage/sage/calculus/calculus.py",
line 3208:
sage: (2.5*f).roots(ring=RR)
Expected:
[(-0.0588115223184494, 1)]
Got:
[(-0.0588115223184495, 1)]
**********************************************************************
File
"/home/jaap/Download/sage-3.3.alpha0/devel/sage/sage/calculus/calculus.py",
line 3210:
sage: f.roots(ring=CC, multiplicities=False)
Expected:
[-0.0588115223184495, 1.36050567903502 + 1.51880872209965*I,
-1.33109991787579 + 1.52241655183732*I, 1.36050567903502 -
1.51880872209965*I, -1.33109991787580 - 1.52241655183732*I]
Got:
[-0.0588115223184495, 1.36050567903502 + 1.51880872209965*I,
-1.33109991787580 + 1.52241655183732*I, 1.36050567903502 -
1.51880872209965*I, -1.33109991787580 - 1.52241655183732*I]
**********************************************************************
1 items had failures:
3 of 29 in __main__.example_81
***Test Failed*** 3 failures.
For whitespace errors, see the file
/home/jaap/Download/sage-3.3.alpha0/tmp/.doctest_calculus.py
[243.9 s]
exit code: 1024
------------------------------
}}}
This is on Fedora 10, 32 bits.
Jaap
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5129>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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