MPI_Pack_external function

Packs a datatype into contiguous memory, using the external32 format.

Syntax

int MPIAPI MPI_Pack_external(
       _In_z_ char                 *datarep,
  _In_ void                        *inbuf,
       int                         incount,
       MPI_Datatype                datatype,
       _Out_bytecap_(outsize) void *outbuf,
       MPI_Aint                    outsize,
       _Inout_ MPI_Aint            *position
);

Parameters

• datarep
  Data representation.

• inbuf [in]
  Start address of the input buffer.

• incount
  Number of input data items.

• datatype
  Datatype of each input data item.

• outbuf
  Start address of the output buffer.

• outsize
  Output buffer size, in bytes.

• position
  Current position in buffer, in bytes.

Return value

Returns MPI_SUCCESS on success. Otherwise, the return value is an error code.

In Fortran, the return value is stored in the IERROR parameter.

Fortran

    MPI_PACK_EXTERNAL(DATAREP, INBUF, INCOUNT, DATATYPE, OUTBUF, OUTSIZE,
                POSITION, IERROR)
        INTEGER INCOUNT, DATATYPE, IERROR
        INTEGER(KIND=MPI_ADDRESS_KIND) OUTSIZE, POSITION
        CHARACTER*(*) DATAREP
        <type> INBUF(*), OUTBUF(*)

Requirements

See also

MPI Datatype Functions