http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57484
--- Comment #4 from Daniel Krügler <daniel.kruegler at googlemail dot com> --- (In reply to Charles L. Wilcox from comment #3) > Signaling NaN for type "f" in hex is "7fe00000". I agree, this one doesn't look right to me, because that looks indeed like a valid qNaN bit pattern only. > Quiet NaN for type "f" in hex is "7fc00000". OK. > Signaling NaN for type "d" in hex is "7ffc000000000000". Similar problem here: Only a qNaN > Quiet NaN for type "d" in hex is "7ff8000000000000". OK. > $ g++ -Wall -Wextra test-signaling-nan.cpp -m64 > Signaling NaN for type "f" in hex is "7fa00000". > Quiet NaN for type "f" in hex is "7fc00000". > Signaling NaN for type "d" in hex is "7ff4000000000000". > Quiet NaN for type "d" in hex is "7ff8000000000000". All OK. > The resulting values on 32-bit vs. 64-bit are different, and I believe the > 64-bit values are the correct ones. I agree.
