Information on Tavori and Dreizin ranged hash function?
Ami Tavory, Vladimir Dreizin (IBM), and Benjamin Kosnik (Red Hat) authored the &quot;Policy-Based Data Structures&quot; library. Ideas developed there were later used in the GNU implementation of the C++ standard library.
Link-only answers are typically discouraged, but let me post the link here anyway because it is not discoverable with Google in a simple way:
https://gcc.gnu.org/onlinedocs/libstdc++/ext/pb_ds/
In particular, range hashing approach is described here:
https://gcc.gnu.org/onlinedocs/libstdc++/ext/pb_ds/hash_based_containers.html