Internal Program Version: gperf  3.1

GNU gperf is a perfect hash function generator.
For a given list of strings, it produces a hash
function and hash table, in form of C or C++ code,
for looking up a value depending on the input string.
The hash function is perfect, which means that the
hash table has no collisions, and the hash table
lookup needs a single string comparison only.

ftp://ftp.gnu.org/gnu/gperf