MPI_Op_create - Creates a user-defined combination
function handle
SYNOPSIS
C:
#include <mpi.h>
int MPI_Op_create( function, commute, op )
MPI_User_function *function;
int commute;
MPI_Op *op;
C++:
#include <mpi.h>
void Op::Init(
User_function* function,
bool commute)
Fortran:
INCLUDE "mpif.h" (or USE MPI)
EXTERNAL function
LOGICAL commute
INTEGER op, ierror
CALL MPI_OP_CREATE(function, commute, op, 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_Op_create routine creates a user-defined
combination function handle. This routine accepts the
following parameters:
function Specifies the user defined function (function).
commute Specifies whether the function is commutative.
Value is true if commutative; false otherwise.
op Returns an operation (handle).
ierror Specifies the return code value for successful
completion, which is in MPI_SUCCESS.
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