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| subroutine  | h5idec_ref_f (obj_id, ref_count, hdferr) | 
|   | Decrements the reference count of an ID.  
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| subroutine  | h5iget_file_id_f (obj_id, file_id, hdferr) | 
|   | Obtains file identifier from the object identifier.  
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| subroutine  | h5iget_name_f (obj_id, buf, buf_size, name_size, hdferr) | 
|   | Gets a name of an object specified by its identifier.  
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| subroutine  | h5iget_ref_f (obj_id, ref_count, hdferr) | 
|   | Retrieves the reference count of an ID.  
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| subroutine  | h5iget_type_f (obj_id, type, hdferr) | 
|   | Retrieves the type of an object.  
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| subroutine  | h5iinc_ref_f (obj_id, ref_count, hdferr) | 
|   | Increments the reference count of an ID.  
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| subroutine  | h5iis_valid_f (id, valid, hdferr) | 
|   | Check if an ID is valid without producing an error message.  
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