.. _method-asynch_pattern_search-merit_function-merit2:

""""""
merit2
""""""


Nonsmoothed merit function


.. toctree::
   :hidden:
   :maxdepth: 1



**Specification**

- *Alias:* None

- *Arguments:* None


**Description**


APPS solves nonlinearly constrained problems by solving a sequence of
linearly constrained merit function-base subproblems. There are
several exact and smoothed exact penalty functions.

``merit2``: based on :math:`\ell_2`  norm