Fixing d2f in interpreter (Was: Re: [kaffe] Re: Re: NetBSD/ppc now works)

Dalibor Topic robilad at
Tue May 11 10:08:02 PDT 2004

Dalibor Topic wrote:
> Dalibor Topic wrote:
>> Riccardo wrote:
>> I suspect that d2f is broken in the interpreter. The Java language 
>> spec demands that in case of overflow the value of float is a signed 
>> infinity, but the C standard says oveflow results in undefined 
>> behaviour. So I assume we'd have to check whether the double is 
>> representable as a float before we convert it, and handle the special 
>> cases that would invoke undefined behaviour ourself.
>> I'm working on a patch.
> Okay, I've got a patch for the interpreter. I'm unsure if it's really 
> necessary, or if it really fixes things, but hey, it's worth a try :)

That one didn't work that well, as it seems your netbsd2-ppc box really, 
really, desperately rounds to next odd no matter what. So I've got an 
updated patch ;)

Riccardo, could you try it out on your machine? If this one works 
better, I'd add a configure check for 'round to odd' and clean up the 
code further.

dalibor topic
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