http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
--- Comment #11 from Richard Biener rguenth at gcc dot gnu.org ---
*** Bug 60237 has been marked as a duplicate of this bug. ***
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
Richard Guenther rguenth at gcc dot gnu.org changed:
What|Removed |Added
CC||ejtttje at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
--- Comment #6 from Paolo Carlini paolo.carlini at oracle dot com 2011-10-17
15:43:58 UTC ---
*** Bug 50724 has been marked as a duplicate of this bug. ***
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
--- Comment #7 from Paolo Carlini paolo.carlini at oracle dot com 2011-10-17
16:49:03 UTC ---
*** Bug 50724 has been marked as a duplicate of this bug. ***
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
--- Comment #8 from Paolo Carlini paolo.carlini at oracle dot com 2011-10-17
18:53:56 UTC ---
*** Bug 50724 has been marked as a duplicate of this bug. ***
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
--- Comment #9 from Andrew Pinski pinskia at gcc dot gnu.org 2011-10-17
19:25:07 UTC ---
*** Bug 50724 has been marked as a duplicate of this bug. ***
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25975
--- Comment #10 from Jonathan Wakely redi at gcc dot gnu.org 2011-10-17
21:05:02 UTC ---
*** Bug 50724 has been marked as a duplicate of this bug. ***
--- Comment #1 from terra at gnome dot org 2006-01-26 14:43 ---
Created an attachment (id=10732)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10732action=view)
Output from gcc-4.0.2 -E -ffast-math nan.c
gcc-4.0.2 -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured
--- Comment #2 from pinskia at gcc dot gnu dot org 2006-01-26 14:44 ---
Please read the docs about -ffast-math. It enables the option
-ffinite-math-only which means no NaNs.
--
pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #3 from pinskia at gcc dot gnu dot org 2006-01-26 14:47 ---
-ffast-math
Sets -fno-math-errno, -funsafe-math-optimizations,
-fno-trapping-math, -ffinite-math-only, -fno-rounding-math, -fno-signaling-nans
and fcx-limited-range.
This option causes the preprocessor macro
--- Comment #4 from terra at gnome dot org 2006-01-26 17:22 ---
ok, thanks. I'll prevent this by checking for __FAST_MATH__ in my code.
One could argue for a warning like
nan.c:13: warning: comparison is always false due to limited range of data type
for use of isnan and similarly
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