.. _mpi_add_error_string:


MPI_Add_error_string
====================

.. include_body

:ref:`MPI_Add_error_string` |mdash| Associates a string with an error code or class


SYNTAX
------


C Syntax
^^^^^^^^

.. code-block:: c

   #include <mpi.h>

   int MPI_Add_error_string(int errorcode, const char *string)


Fortran Syntax
^^^^^^^^^^^^^^

.. code-block:: fortran

   USE MPI
   ! or the older form: INCLUDE 'mpif.h'
   MPI_ADD_ERROR_STRING(ERRORCODE, STRING, IERROR)
   	INTEGER		ERRORCODE, IERROR
   	CHARACTER*(*)	STRING


Fortran 2008 Syntax
^^^^^^^^^^^^^^^^^^^

.. code-block:: fortran

   USE mpi_f08
   MPI_Add_error_string(errorcode, string, ierror)
   	INTEGER, INTENT(IN) :: errorcode
   	CHARACTER(LEN=*), INTENT(IN) :: string
   	INTEGER, OPTIONAL, INTENT(OUT) :: ierror


INPUT PARAMETERS
----------------
* ``errorcode``: MPI error class, or an error code returned by an MPI routine (integer).
* ``string``: Text that corresponds to the error code or class (string).

OUTPUT PARAMETER
----------------
* ``ierror``: Fortran only: Error status (integer).

DESCRIPTION
-----------

This routine associates an error string with an error code or class.
Calling :ref:`MPI_Add_error_string` for an error code or class that already has
an associated error string will replace the old string with the new one.
It is erroneous to call :ref:`MPI_Add_error_string` for an error value not
generated via :ref:`MPI_Add_error_class` or :ref:`MPI_Add_error_code` (e.g., an error
code or class with a value not greater than MPI_LAST_ERRCODE).


ERRORS
------

.. include:: ./ERRORS.rst

.. seealso::
   * :ref:`MPI_Add_error_class`
   * :ref:`MPI_Add_error_code`
   * :ref:`MPI_Error_class`
   * :ref:`MPI_Error_string`