IN: File access property list or data transfer property list identifier
OUT: Type of data
H5P_GET_MULTI_TYPE retrieves the type of data setting from the file access or data transfer property list fapl_id. This enables a user application to specify the type of data the application wishes to access so that the application can retrieve a file handle for low-level access to the particular member of a set of MULTI files in which that type of data is stored. The file handle is retrieved with a separate call to H5Fget_vfd_handle (or, in special circumstances, to H5FDget_vfd_handle; see Virtual File Layer and List of VFL Functions in HDF5 Technical Notes).
The type of data returned in type will be one of those listed in the discussion of the type parameter in the the description of the function H5Pset_multi_type.
Use of this function is only appropriate for an HDF5 file written as a set of files with the MULTI file driver.
Returns a non-negative value if successful; otherwise returns a negative value.