Re: Should -mieee-fp equal fpsetmask(0) to avoid SIGFPE on FreeBSD?

[Dan Nelson]

In the last episode (Jan 05), Ronald F. Guilmette said:
> I hope that isn't true.  _I_ certainly haven't yet given up hope that
> someone will do the Right Thing and disable all IEEE traps before
> entry to main().

Take a look at /sys/i386/include/npx.h; I believe you can change the
default FP mask there.  Set __INITIAL_NPXCW__ to your favourite hex
value, and rebuild the kernel.
 
> >... and it's not clear if the Mozilla code is correct or not.
> 
> It isn't.

Aah, but we wouldn't have found the bug if FreeBSD hadn't caught it :)
I prefer to trap by default.  The very few programs that require IEEE
conformance can call fpsetmask() themselves.

-- 
        Dan Nelson
        [EMAIL PROTECTED]


To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message