#7377: Symbolic Ring to Maxima via EclObject
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Reporter: nbruin |
Owner: nbruin
Type: enhancement |
Status: needs_work
Priority: major |
Milestone: sage-feature
Component: symbolics |
Keywords:
Author: Nils Bruin, Jean-Pierre Flori |
Upstream: N/A
Reviewer: Jean-Pierre Flori, François Bissey, Karl-Dieter Crisman |
Merged:
Work_issues: |
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Comment(by nbruin):
Turns out the rounding errors weren't really that. Rather, max_to_sr
preferred to return floats rather than RealDoubleElement, which are
apparently the sage default type for float, and these print differently:
{{{
sage: var('x,y')
(x, y)
sage: assume(y>1)
sage: M=sage.calculus.calculus.maxima
sage: I1=SR(M("integrate(log(x^2+y^2),x,0.0001414,1.0)"))
sage: I2=integrate(log(x^2+y^2),x,0.0001414,1.0)
sage: c1=I1.operands()[2].operands()[1].pyobject()
sage: c2=I2.operands()[2].operands()[1].pyobject()
sage: [c1,c2]
[-0.0001414, -0.00014139999999999999]
sage: [type(c1),type(c2)]
[<type 'sage.rings.real_double.RealDoubleElement'>, <type 'float'>]
}}}
Patch attached. That means that the __only__ doctest failures now are due
to the fact that "maxima asks a question" gets reported via a different
error. Ready for review?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7377#comment:89>
Sage <http://www.sagemath.org>
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