On Tue, Jan 19, 2021 at 06:24:49PM +0100, Bodo Stroesser wrote: > > I had a second look into math.h, but I don't find any reason why round_up > could overflow. Can you give a hint please?
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
^^^^^
That +1 can overflow
It looks like it would not be so bad to implement some
check_round_up_overflow() if people prefer
Jason
