#5209: Sage 3.3.a6: numerical noise in sage/plot/plot.py on OpenSUSE 11.1 64 bit
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Reporter: mabshoff | Owner: mabshoff
Type: defect | Status: new
Priority: blocker | Milestone: sage-3.3
Component: doctest | Resolution:
Keywords: |
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Comment (by mabshoff):
And another one - it might be the same noise since it is also from an
OpenSUSE box:
{{{
**********************************************************************
File
"/home/mabshoff/build-3.3.alpha6/sage-3.3.alpha6-menas/devel/sage/sage/plot/plot.py",
line 2582:
sage: generate_plot_points(sin(x), (-pi, pi), randomize=False)
Expected:
[(-3.1415926535897931, -1.2246...e-16), (-2.748893571891069,
-0.38268343236508989), (-2.3561944901923448, -0.707106781186547...),
(-2.1598449493429825, -0.83146961230254546), (-1.9634954084936207,
-0.92387953251128674), (-1.7671458676442586, -0.98078528040323043),
(-1.5707963267948966, -1.0), (-1.3744467859455345,
-0.98078528040323043), (-1.1780972450961724, -0.92387953251128674),
(-0.98174770424681035, -0.83146961230254524), (-0.78539816339744828,
-0.707106781186547...), (-0.39269908169872414, -0.38268343236508978),
(0.0, 0.0), (0.39269908169872414, 0.38268343236508978),
(0.78539816339744828, 0.707106781186547...), (0.98174770424681035,
0.83146961230254524), (1.1780972450961724, 0.92387953251128674),
(1.3744467859455345, 0.98078528040323043), (1.5707963267948966, 1.0),
(1.7671458676442586, 0.98078528040323043), (1.9634954084936207,
0.92387953251128674), (2.1598449493429825, 0.83146961230254546),
(2.3561944901923448, 0.707106781186547...), (2.748893571891069,
0.38268343236508989), (3.1415926535897931, 1.2246...e-16)]
Got:
[(-3.1415926535897931, -1.2246467991473532e-16), (-2.748893571891069,
-0.38268343236508989), (-2.3561944901923448, -0.70710678118654757),
(-2.1598449493429825, -0.83146961230254535), (-1.9634954084936207,
-0.92387953251128674), (-1.7671458676442586, -0.98078528040323043),
(-1.5707963267948966, -1.0), (-1.3744467859455345,
-0.98078528040323043), (-1.1780972450961724, -0.92387953251128674),
(-0.98174770424681035, -0.83146961230254524), (-0.78539816339744828,
-0.70710678118654746), (-0.39269908169872414, -0.38268343236508978),
(0.0, 0.0), (0.39269908169872414, 0.38268343236508978),
(0.78539816339744828, 0.70710678118654746), (0.98174770424681035,
0.83146961230254524), (1.1780972450961724, 0.92387953251128674),
(1.3744467859455345, 0.98078528040323043), (1.5707963267948966, 1.0),
(1.7671458676442586, 0.98078528040323043), (1.9634954084936207,
0.92387953251128674), (2.1598449493429825, 0.83146961230254535),
(2.3561944901923448, 0.70710678118654757), (2.748893571891069,
0.38268343236508989), (3.1415926535897931, 1.2246467991473532e-16)]
**********************************************************************
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5209#comment:1>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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