performance - 64 bit integer math and bitwise operation benchmarks -


I am trying to feel the difference between the performance of the integer multiplied by bitwise action ...

I have two potential hashing algorithms that act on 64 bit keys, which use a single multiplication, single right shift, and a mask, which includes many changes and mask functions. It is ... but I want to try and compare the magic hashing number Yaon take some time to locate them before implementation already understand.

On a typical 64 bit processor, how many bitwise actions can executing approximately 64 bit integer multiplication instructions?

This gives a general comparison ... specify 64 bit or 32 bit Does not .. but I'll use it as a baseline.


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