On Sat, 27 Feb 2010, Nick Torenvliet wrote:
< Hi all,?
<
< Just using Maxima/XMaxima for the very first time and received the following when trying to run the tests,?
<
< Checked the web, and the docs, could not find anything conclusive on "Problem 298," can anyone help me?
<
< (%i1) plot3d(x^2*y - 2*x - 4*y, [x,10,20],[y,10,20])
<
< Running tests in rtestnset:?
< ********************** Problem 298 ***************
< Input:
< extremal_subset({1, sqrt(2), 3, %pi}, log, max)
<
<
< Result:
< Universal error handler called recursively (:ERROR NIL
< ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?CONDITIONS::CLCS-UNIVERSAL-ERROR-HANDLER
< ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?"" "Couldn't protect")
< Universal error handler called recursively (:ERROR NIL
< ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?CONDITIONS::CLCS-UNIVERSAL-ERROR-HANDLER
< ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?"" "Couldn't protect")
< error-catch
<
< This differed from the expected result:
< {%pi}
<
< Nick
Nick,
Please tell us how you installed your Maxima, and which version it is
(the function build_info reports this in Maxima). I'm going to guess
you've installed Maxima 5.17.1 from an Ubuntu or Debian repository.
In which case, there is nothing special about #298, rather that build
with GCL is buggy and has many outstanding bug reports against it.
I suggest you install a newer version of Maxima (v5.20.* is current).
I think that you can find .deb packages in the Ubuntu repository. See
some recent discussions on this list for more information.
Leo
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