NAME

       MPI_Type_free_keyval - Frees a previously created type key value.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Type_free_keyval(int *type_keyval)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_TYPE_FREE_KEYVAL(TYPE_KEYVAL, IERROR)
            INTEGER   TYPE_KEYVAL, IERROR

C++ Syntax

       #include <mpi.h>
       static void MPI::Datatype::Free_keyval(int& type_keyval)

INPUT/OUTPUT PARAMETER

       type_keyval
                 Key value to free (integer).

OUTPUT PARAMETER

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

ERRORS

       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.

       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.

SEE ALSO

       MPI_Type_create_keyval