9 Nov
2006
9 Nov
'06
2 p.m.
John Maddock wrote:
Johan Råde wrote:
That is weird. Can you run the inspect tool (fpclassify/tools/inspect/inspect.cpp) on Win32 / Intel 7?
I don't think it differs from any other Win32 compiler:
s. nan ff 80 00 00
It certainly does differ. All bits in the mantissa are zero. It is the IEEE754 binary representation of negative infinity. Here is what I get on my Win32 / MSVS 7.1 / ia32 platform s. nan 7f 80 00 01 There is the same problem for double and long double. Looks like Intel 7 on Win32 has a broken numeric_limits<T>::signalling_NaN(). --Johan