Sets the data type of the data to be written in the next write operation.
Return value
Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
Description
DFSDsetNT must be called if a data type other than float32 is to be stored. DFSDsetNT and DFSDsetdims can be called in any order, but they should be called before any other DFSDset* functions and before DFSDputdata or DFSDadddata.
The following symbolic names can be used as the value of data_type: