https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96811
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2020-08-27 Status|UNCONFIRMED |NEW --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The reasoning is that doing 1/x first we "multiply" its rounding error N times while doing it last has it only once.