Verification phase
====

The matrices :math:`\mathrm{A}`, :math:`\mathrm{B}` and :math:`\mathrm{C}`, which are the arguments of the keywords (MATR_A/MATR_RIGI), (/), (MATR_MASS/MATR_RIGI_GEOM/MATR_B), and (MATR_AMOR), must be consistent with each other (i.e. rely on the same numbering and the same storage method).

Depending on the search option chosen, we check:


.. code-block:: text

    OPTION =' BANDE '

The FREQ keyword argument (case TYPE_RESU =' DYNAMIQUE ') must provide at least **two** values.

The CHAR_CRIT keyword argument (case TYPE_RESU =' MODE_FLAMB 'or' GENERAL ') must provide exactly **two** values.


.. code-block:: text

    OPTION =' CENTRE '

The argument for the FREQ keyword or the CHAR_CRIT keyword must provide exactly **one** value.


.. code-block:: text

    OPTION =' SEPARE 'or' AJUSTE '

The argument for the FREQ keyword or the CHAR_CRIT keyword must provide at least **two** values.

If the precisions and the maximum numbers of iterations are unrealistic (for example, precisions less than the machine precision or negative numbers of iterations), the calculation is not performed.


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