MPI_Keyval_free(3)

NAME
     MPI_Keyval_free - Frees the attribute key for the communicator cache
     attribute

SYNOPSIS
     C:

          #include <mpi.h>

          int MPI_Keyval_free ( keyval )
          int *keyval;


     C++:

          #include <mpi.h>

          void Comm::Free_keyval(
          int&              comm_keyval)


     Fortran:

          INCLUDE "mpif.h" (or USE MPI)

          INTEGER keyval, ierror

          CALL MPI_KEYVAL_FREE(keyval, ierror)


STANDARDS
     This release implements the MPI 1.2 standard, as documented by the MPI
     Forum in the spring 1997 release of MPI:  A Message Passing Interface
     Standard.

DESCRIPTION
     The MPI_Keyval_free routine frees the attribute key for the communicator
     cache attribute.  This routine accepts the following parameter:

     keyval    Frees the integer key value (integer)

     ierror    Specifies the return code value for successful completion,
               which is in MPI_SUCCESS.  MPI_SUCCESS is defined in the mpif.h
               file.

NOTES
     Key values are global (they can be used with any and all communicators).