Mueller integer hash function (bit mixer) A (64-bit).
Based on splitmix64, which seems to be based on the blog article "Better Bit Mixing" (mix 13).
https://stackoverflow.com/a/12996028/683710
http://zimbry.blogspot.se/2011/09/better-bit-mixing-improving-on.html
http://xorshift.di.unimi.it/splitmix64.c
See Implementation
Mueller integer hash function (bit mixer) A (64-bit).
Based on splitmix64, which seems to be based on the blog article "Better Bit Mixing" (mix 13).