Kahan's Floating Point Test
Sylvain Pion
Sylvain.Pion@sophia.inria.fr
Thu May 31 00:01:00 GMT 2001
Talking about this, I usually do a manual flush to memory in order to have
correct rounding when I need it, I use something like the following :
inline double force_to_mem (double x)
{
asm("" : "=m"(x) : "m"(x));
return x;
}
Unfortunately, this code doesn't work for C++ with GCC 3.0 on x86.
(PR c++/2115, still not analyzed... hint, hint :)
And I have no other idea how to do this reliably for GCC 3...
--
Sylvain
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