Re: [PATCH v3 03/22] host-utils: introduce uabs64()

[Richard Henderson]

On 9/10/21 4:26 AM, Luis Pires wrote:
> Introduce uabs64(), a function that returns the absolute value of
> a 64-bit int as an unsigned value. This avoids the undefined behavior
> for common abs implementations, where abs of the most negative value is
> undefined.

I do question the comment there wrt undefined. We compile with -fwrapv, which means that 
*no* overflow is undefined; we always have properly truncated twos-compliment values.


r~