Re: [PATCH v4 6/6] qht: Fix threshold rate calculation

[Richard Henderson]

On 6/17/20 1:13 PM, Richard Henderson wrote:
> -        *threshold = rate * UINT64_MAX;
> +        *threshold = (rate * 0xffff000000000000ull)
> +                   + (rate * 0x0000ffffffffffffull);

Well, while this does silence the warning, it produces the exact same results
as before, since the intermediate double result still only has 53 bits of
precision.

We're probably be better off with the nextafter(0x1p64, 0.0) form that we've
used elsewhere.


r~