#5930: switch from maxima to pynac for core symbolic manipulation system
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Reporter: was | Owner: tbd
Type: enhancement | Status: new
Priority: blocker | Milestone: sage-4.0
Component: symbolics | Keywords:
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Old description:
New description:
If you want to try the code out, there is an spkg and two patches in
http://sage.math.washington.edu/home/mhansen/symbolics/.
These should install and apply cleanly to Sage 3.4.2.
Note that after applying all this you must delete all traces of
constants.so:
{{{
$ rm devel/sage/build/lib.macosx-10.3-i386-2.5/sage/symbolic/constants*
$ rm devel/sage/build/temp.macosx-10.3-i386-2.5/sage/symbolic/constants*
$ rm devel/sage/build/sage/symbolic/constants.so
}}}
--
Comment(by was):
Bug/Issue: Control-C doesn't work in some cases.
{{{
----------------------------------------------------------------------
| Sage Version 3.4.2, Release Date: 2009-05-05 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: var('x,y,z')
(x, y, z)
sage: time f = (x+y+z)^5
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.00 s
sage: g = f*(f+1)
sage: timeit('g.expand()')
5 loops, best of 3: 53.2 ms per loop
sage: %prun g.expand()
8890 function calls in 0.069 CPU seconds
Ordered by: internal time
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.065 0.065 0.069 0.069 {method 'expand' of
'sage.symbolic.expression.Expression' objects}
8863 0.003 0.000 0.003 0.000 functional.py:393(imag)
1 0.000 0.000 0.069 0.069 <string>:1(<module>)
4 0.000 0.000 0.000 0.000 arith.py:1140(gcd)
4 0.000 0.000 0.000 0.000 {method 'lcm' of
'sage.structure.element.PrincipalIdealDomainElement' objects}
4 0.000 0.000 0.000 0.000 arith.py:1256(lcm)
4 0.000 0.000 0.000 0.000 {method 'gcd' of
'sage.rings.integer.Integer' objects}
8 0.000 0.000 0.000 0.000 {hasattr}
1 0.000 0.000 0.000 0.000 {method 'disable' of
'_lsprof.Profiler' objects}
sage: %prun v = [g.expand() for _ in range(1000)]
^CException exceptions.KeyboardInterrupt: KeyboardInterrupt() in
'sage.symbolic.pynac.py_is_real' ignored
^CException exceptions.KeyboardInterrupt: KeyboardInterrupt() in
'sage.symbolic.pynac.py_is_real' ignored
^CException exceptions.KeyboardInterrupt: KeyboardInterrupt() in
'sage.symbolic.pynac.py_is_real' ignored
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5930#comment:2>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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