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

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_TYPE_FREE_KEYVAL(TYPE_KEYVAL, IERROR)
            INTEGER   TYPE_KEYVAL, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Type_free_keyval(type_keyval, ierror)
            INTEGER, INTENT(INOUT) :: type_keyval
            INTEGER, OPTIONAL, INTENT(OUT) :: 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

4.1.6                                             Sep 30, 2023                           MPI_Type_free_keyval(3)