MPI functions

The following MPI functions accept user-defined functions and require special treatment when autodouble is used:

MPI_Op_create()
MPI_Errhandler_create()
MPI_Keyval_create()
MPI_Comm_create_errhandler()
MPI_Comm_create_keyval()
MPI_Win_create_errhandler()
MPI_Win_create_keyval()

The user-defined callback passed to these functions should accept normal-sized arguments. These functions are called internally by the library where normally-sized data types will be passed to them.

MPI functions

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