checks/csv-diff
===============

The ``csv-diff`` action compares two CSV files and reports differences in numerical values.

It is typically used to validate simulation results against a reference file.


Example usage
-------------

.. code-block:: yaml

   steps:
     - uses: checks/csv-diff
       with:
         gold: ref.csv
         test: results.csv


Arguments
---------

- ``gold`` (string, required): Path to the reference CSV file.
- ``test`` (string, required): Path to the generated output file.
- ``abs_tol`` (float, optional): Allowed absolute difference per value. Default is 1e-12.
- ``rel_tol`` (float, optional): Allowed relative difference per value. Default is 1e-6.


See Also
--------

- :doc:`exodiff`