/*D
   MPI_Add_error_code - Add an MPI error code to an MPI error class

Synopsis:
.vb
int MPI_Add_error_code(int errorclass, int *errorcode)
.ve

Input Parameters:
. errorclass - error class (integer)

Output Parameters:
. errorcode - new error code to be associated with errorclass (integer)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_OTHER

D*/

