OK, I thought you were suggesting that:
unsigned int hash(unsigned int x) {
x = ((x >> 16) ^ x) * 0x45d9f3b;
x = ((x >> 16) ^ x) * 0x45d9f3b;
x = ((x >> 16) ^ x);
return x;}
But, Barry is vetoing this.
On Tue, May 17, 2016 at 4:18 PM, Jed Brown <j...@jedbrown.org> wrote:
> Mark Adams <mfad...@lbl.gov> writes:
>
> > Why not just set each index with hash(i) = (i >> 32)^i and forget
> > VecSetRandom in here?
>
> Because if your vertices are numbered lexicographically on a Cartesian
> grid, this gives you a plane. But just put in the legit hash (the one I
> linked is pretty good) and then you don't have to worry about
> accidentally stumbling upon pathological cases.
>
