The main problem with external functions is pure/impure which is not
handled. If the argument list of a function is constant OMC will always
try to evaluate it. This works well for pure functions like
Modelica.Math.sin, but not for parts of the code that are supposed to
fetch data from sensors, etc.
External C functions are rather well tested.
There is only one testcase for external F77 (if you have a F77 that
doesn't work with language "F77", try using "C" on the same library).
External objects are handled, but I'm not sure if all cases are covered
(I haven't read the spec to see all the ways they can be used).
Fixing problems with external functions tends to be easy as it is only
code generation that needs to be fixed.
--
Martin Sjölund
On 2010-10-20 23:53 , Francesco Casella wrote:
Dear all,
just a quick question, what is the degree of support of external
functions and external objects in OMC?
Thanks
Francesco
