[GiNaC-devel] About a (poor) parity in expressions.
Vladimir V. Kisil
kisilv at maths.leeds.ac.uk
Sun Oct 17 23:59:55 CEST 2010
>>>>> On Sun, 17 Oct 2010 13:40:19 -0700 (PDT), Sergei Steshenko <sergstesh at yahoo.com> said:
SS> To me it looks like two missing rewriting rules.
Yes, it is so. But if they added to GiNaC core this can break
something in a different place, see the example with my own suggestion
to "add a rewriting rule":
A hundred of rewriting rules in the core GiNaC will make it slow and
can cause other problems. A couple of rewriting rules added in the user's
code to address a specific issue at the right place are much more
manageable. This what I am doing in my own programmes right now.
Vladimir V. Kisil email: kisilv at maths.leeds.ac.uk
-- www: http://www.maths.leeds.ac.uk/~kisilv/
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