#6111: [with patch; needs review] review symbolics in sage-4.0 (switch to pynac)
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Reporter: was | Owner: burcin
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.0
Component: calculus | Keywords:
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Comment(by burcin):
Some comments after reading the changesets to pynac after the unreleased
0.1.6 version (numbers next to the bullets refer to changesets in the
repository from the pynac-0.1.7.spkg file):
* 90:fb6582f9bd81
isn't this already handled by the first lines of pyExpression_to_ex() in
pynac.pyx?
* 88:25d02eeb427d
we should add error checking to py_get_constant() call, we can't
guarantee that a constant with the same name will be available between
different versions of Sage
* 84:7b3272f4b4bf is mine, author field lists Mike
* 82:da7d7a220723 evalf for constants using a lookup table
I already commented on this on IRC and the devel list. ginac/pynac
already provides a framework to handle this, I would like to revert this
in a future version. My previous message:
http://groups.google.com/group/sage-devel/msg/dc46d9d94dd31b5e (scroll to
the paragraph below the bullet items)
I will try to prepare a new package which fixes the version numbers of the
library and error handling of py_get_constant().
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6111#comment:5>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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