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Re: standards on SIGFPE for divide by zero?
On 2/28/11 12:38 PM, Greg Troxel wrote:
My question is: what do the relevant standards say about this? Is it
required to SIGFPE? If it's required, I'll file a PR against
port-powerpc and mark the tests expected-fail on ppc. If not, then
I'll skip them on ppc.
I dimly recall that it's required to be able to set this mode, but that
it doesn't have to be the default. I think this is controlled by
IEEE754, but note that vax is different.
See fpgetmask(3). Maybe the test should set FP_X_DZ.
Someone else pointed me there, but perhaps I'm using it wrong... after doing
The only thing different is that "1.0/0.0" prints "0" instead of "inf". :/
Regardless of standards, it's probably good for NetBSD to be consistent
across ports on default fp behavior.
I agree, but am willing to yield to more experienced heads on this.
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