http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60128
--- Comment #49 from dave.anglin at bell dot net --- On 3/26/2014 2:07 PM, dominiq at lps dot ens.fr wrote: > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60128 > > --- Comment #48 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- >>> AFAICT on hppa*-*-hpux11* the E format does not round to nearest for tie. >>> What >>> is the output of the following test >>> >>> ... >>> >>> ? On x86_64-apple-darwin13, I get '1.0e+04 9.8e+03'. >> You are correct: >> 9.9e+03 9.7e+03 > OK! Unless someone beats me, I'll split the test in two, one for the main > issue, the other one for the round to even on tie. It looks like hppa rounds toward zero on tie. I couldn't find any documentation on the subject. For ia64, HP states that the rounding is according to C99.