* Eamonn McManus: > On 3 February 2012 00:11, Florian Weimer <fwei...@bfk.de> wrote: >> Would it make sense to replace (x ^ r) < 0 && (x ^ y) >= 0 >> with (x ^ y ^ r) < 0? > > That would not be correct. For example, it would signal overflow for -1 + 1.
Oops. But there has to be a way to implement this using just one comparison. -- Florian Weimer <fwei...@bfk.de> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99
