[fpc-devel] Unexpected behaviour of bit operators

[Marco Borsari]

On Fri, 17 May 2019 16:45:52 +0200
gabor <gabor at poczta.onet.pl> wrote:

> Can you provide c source code?
> I'm not sure about this:
> ...(a SHL 5+b SHR 2)...
> Maybe it should look like this:
> ((a SHL 5+b) SHR 2)
> 
> Regards, Michał.

Please look at

https://burtleburtle.net/bob/hash/doobs.html

for the Rotating Hash, it is 32 bit but I remember there is the 16
bit version even. Correct implementation is the sum (xoring) of
two shifted value (be careful that my hash it is intended for
string of length 2).

-- 
Simplex sigillum veri