Perhaps add file initializations for TLM for profiles package

[Shreyas911]

This is a feature request.

It would be nice to add file initialization for TLM with file id fidtangent similar to how files are initialized for the adjoint mode with file id fidadjoint in pkg/profiles/profiles_init_fixed.F. This would allow forward differentiation of the profiles package, which is perhaps helpful for UQ in the future.

Basic compatibility now exists for reverse differentiation of the profiles package with Tapenade in PR #685. While attempting to make forward differentiation compatible, I noticed this missing link. Without this, even TAF is unable to achieve the forward mode differentiation.

Best,
Shreyas

[jm-c]

@timothyas do you have any comment on this issue ?

[timothyas]

I'm sorry but unfortunately I wouldn't know how to do this at the moment. I have never looked into the profiles package.