[GiNaC-list] Piecewise function

Vladimir V. Kisil kisilv at maths.leeds.ac.uk
Thu Mar 12 14:32:07 CET 2015

>>>>> On Thu, 12 Mar 2015 08:50:22 +0100 (CET), Christophe Trophime <christophe.trophime at lncmi.cnrs.fr> said:

    CT> Hi, I am using GiNac within a Finite Element Library Feel++.
    CT> I would to define piecewise function in GiNaC.  Is this possible
    CT> with latest version?

    It depends from the set of properties, which you expect from such a
  function. The GiNaC::function class is rather flexible. If you only
  need values of the function to be evaluated by piecewise rules, then
  it is rather easy to achieve through function::eval() and
  function::evalf() methods.
Vladimir V. Kisil                 http://www.maths.leeds.ac.uk/~kisilv/
  Book:     Geometry of Mobius Transformations     http://goo.gl/EaG2Vu
  Software: Geometry of cycles          http://moebinv.sourceforge.net/

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