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.\" -*- nroff -*-
.\" Copyright 2013 Los Alamos National Security, LLC. All rights reserved.
.\" Copyright 2010 Cisco Systems, Inc. All rights reserved.
.\" Copyright 2006-2008 Sun Microsystems, Inc.
.\" Copyright (c) 1996 Thinking Machines Corporation
.\" $COPYRIGHT$
.TH MPI_Add_error_string 3 "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
.SH NAME
.nf
\fBMPI_Add_error_string\fP \- Associates a string with an error code or class
.fi
.SH SYNTAX
.ft R
.SH C Syntax
.nf
#include <mpi.h>
int MPI_Add_error_string(int \fIerrorcode\fP, const char *\fIstring\fP)
.fi
.SH Fortran Syntax
.nf
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_ADD_ERROR_STRING(\fIERRORCODE, STRING, IERROR\fP)
INTEGER \fIERRORCODE, IERROR\fP
CHARACTER*(*) \fISTRING\fP
.fi
.SH Fortran 2008 Syntax
.nf
USE mpi_f08
MPI_Add_error_string(\fIerrorcode\fP, \fIstring\fP, \fIierror\fP)
INTEGER, INTENT(IN) :: \fIerrorcode\fP
CHARACTER(LEN=*), INTENT(IN) :: \fIstring\fP
INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP
.fi
.SH C++ Syntax
.nf
#include <mpi.h>
void MPI::Add_error_string(int \fIerrorcode\fP, const char* \fIstring\fP)
.fi
.SH INPUT PARAMETERS
.ft R
.TP 1.4i
errorcode
MPI error class, or an error code returned by an MPI routine (integer).
.ft R
.TP 1.4i
string
Text that corresponds to the error code or class (string).
.SH OUTPUT PARAMETER
.ft R
.TP 1.4i
IERROR
Fortran only: Error status (integer).
.SH DESCRIPTION
.ft R
This routine associates an error string with an error code or
class. Calling 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 MPI_Add_error_string for an
error value not generated via MPI_Add_error_class or
MPI_Add_error_code (e.g., an error code or class with a value not
greater than MPI_LAST_ERRCODE).
.SH ERRORS
.ft R
Almost all MPI routines return an error value; C routines as
the value of the function and Fortran routines in the last argument. C++
functions do not return errors. If the default error handler is set to
MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
will be used to throw an MPI::Exception object.
.sp
Before the error value is returned, the current MPI error handler is
called. By default, this error handler aborts the MPI job, except for
I/O function errors. The error handler may be changed with
MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN
may be used to cause error values to be returned. Note that MPI does not
guarantee that an MPI program can continue past an error.
.SH SEE ALSO
.ft R
.nf
MPI_Add_error_class
MPI_Add_error_code
MPI_Error_class
MPI_Error_string
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