------- Comment #16 from singler at gcc dot gnu dot org 2009-10-22 16:41 ------- (In reply to comment #14) > (In reply to comment #10) > > > However, I do not fully trust the double arithmetics yet, although some test > > cases work. Does anybody else know a better way to avoid an overflow in > > ((a * > > b) / c) with only integer arithmetics and normal rounding? > > you can use a 128-bit integer type on x86-64.
Very good idea. Do you know a good #ifdef clause to check its availability. Is it really just x64-64? Also, I probably want to use it only when really needed, because I assume it to be implemented in software, in particular the division. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40852
