IN: Identifier of the object whose associated file identifier will be returned; can be a file, group, dataset, named datatype or attribute identifier
H5I_GET_FILE_ID returns the identifier of the file associated with the object referenced by obj_id.
Note that the HDF5 library permits an application to close a file while objects within the file remain open. If the file containing the object obj_id is still open, H5I_GET_FILE_IDwill retrieve the existing file identifier. If there is no existing file identifier for the file, i.e., the file has been closed, H5I_GET_FILE_IDwill reopen the file and return a new file identifier. In either case, the file identifier must eventually be released using H5F_CLOSE.
Returns a file identifier on success, negative on failure.
Function introduced in this release. Fortran subroutine introduced in this release.