Vinzent Steinberg wrote: > On Jun 25, 8:33 am, Toon Verstraelen <toon.verstrae...@ugent.be> > wrote: >> In [15]: ccode(integrate(sin(x)/x,x)) >> Out[15]: Integral(sin(x)/x, x) >> >> This should always raise an exception. Such a thing is never ever going >> to be compilable. > > We could use a library (maybe sepcified by the user) that can evaluate > Integrals numerically.
Thanks for all the helpful comments. The numerical integration is a bit troublesome, and probably something we can not fix at the ccode level. C does not support lambda functions or functions defined inside other functions. In this case sin(x)/x should have been defined elsewhere as a separate function. Then the numerical integration routine can take a pointer to that function as a first argument. (It's a C problem and can be done in other languages like Python.) I'm afraid that the current ccode/codegen design does not allow this kind of features for some languages, and a more holistic approach would be necessary. (where ccode and codegen are merged in one module, somthing like the work of Marc Dewing). I also think it is a bit beyond my current intentions with codegen. The original idea was to let it implement lenghtly formula's that no one wants to code by hand. I would suggest to raise a NotImplementedError, until we find an appropriate solution. cheers, Toon --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
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