There seems to be more than one problem here...
1. You need to allocate the array as
real* xx = new real[3*mesh.numVertices()];
2. Yes indeed, the size is never computed and it needs to be computed
correctly or otherwise you'll most likely get a segmentation fault.
For this to work, a user-defined function must know the dimensions of
the value type and it currently has no idea... I suggest we make the
two functions dim() and rank() in Function virtual so that it is
possible to compute this. Any further thoughts?
/Anders
Jake Ostien wrote:
> Hi,
>
> I may have found a bug in the interpolation method for the
> UserFunction. In the private data there is a uint size that gets
> initialized to 1 in the constructor, but, as near as I can tell, does
> not get set anywhere else. When I try and do something like
>
>
> <f is a member of a BodyForce class that returns a 3D force vector
> and is derived from Function, thus its a UserFunction>
>
> real* xx = new real[mesh.numVertices];
> f.interpolate(xx);
>
>
> I get a memory error from glibc. To make a long (painful) story
> short(er), I realized that in the interpolation function, local_values
> was of size 1 and needed to be of size 3. So I hard coded in a 3 in
> place of size, and things magically got better. Unfortunately, it is
> not clear to me how to fix this in the general case. If anyone has a
> suggestion, I'd be happy to try it out.
>
> -Jake
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