integration

[Axel Hutt]

Dear all,

I apply the GSL-routine qag and related for the integration
part in integro-differential equations. The routines are okay,
but quite slow for rather non-smooth data (like random initial
values).
Does anybody also apply GSL-routines for integration for
integro-differential equations and if yes, which routines do you
apply?
I also try some hand-made Taylor-expansion-routines, which however
show less stable behaviour.


Axel