http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54550
--- Comment #5 from Veiokej <veiokej at gmail dot com> 2012-09-12 03:28:43 UTC --- Johnathan, Yes, I've read the floating point nonbug stuff. This isn't a nonbug. Michael, I understand your point, and thanks for the command line option. However, this is a subtly different issue than saying "64-bit double precision is slightly more accurate on X86 platforms due to 80-bit temporaries, vs. X64 platforms". The reason it's different is because there is no math done, and 80-bit precision can hold 100% of 64-bit values with no loss of precision. So no matter what, my equality test should not fail. Andrew, I appreciate that. Let me see if I can come up with something short of uploading the entire codebase. It's extremely sensitive to neighboring code, and is thus hard to isolate.
