std::arg() bug : not repetitive ?

Marco Atzeri marco_atzeri@yahoo.it
Wed Sep 2 07:05:00 GMT 2009


--- Mer 2/9/09, Dave Korn  ha scritto:
 
>   Bah.  Still, at least the -ffloat-store
> workaround still helps, for this
> case at any rate..  Also, if you get GCC to use SSE
> instructions, there's no
> issue with excess precision:
> 
> > $ g++-4 comp_2.cc -o0 -o comp_2 -I
> /usr/include/octave-3.2.0/octave -march=pent
> > ium4 -msse -mfpmath=sse
> > 
> > $ ./comp_2.exe
> > 0.785398
> > 0.785398
> > 0
> > 0
> > 
> > $

Are this setting acceptable for a cygwin package ?

-march=pentium4 -msse -mfpmath=sse



> 
>   However it does look like it's not going to get
> fully fixed for C++ until
> someone with some serious language-lawyering skills can
> spend some time
> defining the exact semantics.

Not me. ;-(

> 
>     cheers,
>       DaveK
> 






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