+void unserialize_contiguous( const void *contiguous_vector,
+ void *noncontiguous_vector,
+ int count,
+ void *type,
+ MPI_Op op);
+
+void serialize_contiguous( const void *noncontiguous_vector,
+ void *contiguous_vector,
+ int count,
+ void *type);
+
+void free_contiguous(MPI_Datatype* type);