original 1.0.0 / at Apr 6, 2011: google/cityhash@6efae23
And my code committed at Apr 6, 2012.
After then, the original implementation has been upgraded several times and the hash value has changed.
Histories:
- CityHash v1, April 11, 2011 <= this code as same
- CityHash v1.0.1, April 28, 2011
- CityHash v1.0.2, May 8, 2011
- CityHash v1.0.3, October 6, 2011
- CityHash v1.1, October 22, 2012
see: https://github.com/google/cityhash/blob/master/NEWS
Note which version of the implementation is compatible.