Convenient access to MFront's tangent operator blocks data
This MR is very similar to the block access of thermodynamic forces data (!4258 (merged)).
The differences are basically:
- now we are dealing with matrices, not only with vectors.
- we only need read access
- some of the tangent operator blocks can be missing, the thermodynamic forces data had to be complete.
-
Feature description was added to the changelog -
Tests covering your feature were added? -
Any new feature or behavior change was documented?
Edited by Christoph Lehmann