http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48139
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-16
23:35:00 UTC ---
POSIX says:
These functions shall fail if:
Domain Error
The x argument is NaN or ±Inf, or the correct value is not representable as an
integer.
If the integer expression (math_errhandling & MATH_ERRNO) is non-zero,
then errno shall be set to [EDOM]. If the integer
expression (math_errhandling & MATH_ERREXCEPT) is non-zero, then the invalid
floating-point exception shall be raised.
so we can't optimize it without -fno-math-errno.
