H5LTget_attribute_ullong

herr_t H5LTget_attribute_ullong(hid_t loc_id,  const  char *  obj_name,
       const  char *  attr_name,  ulong *  data)

Gets an unsigned long long attribute.

Reads an attribute containing unsigned long long values.

`loc_id`	Location identifier
`obj_name`	Name of the object containing the attribute
`attr_name`	Name of the attribute
`data`	Buffer to store the attribute data

Non-negative on success, negative on failure.