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Re: Powerpc64 long double support
Richard Sandiford <rsandifo@redhat.com> writes:
> Alan Modra <amodra@bigpond.net.au> writes:
>>> My only concern (in case it wasn't obvious ;) is that you don't
>>> change the behaviour for IRIX.
>>
>> Easy. I can add this.
>>
>> else if (!fmt->qnan_msb_set)
>> {
>> /* MIPS slavishly follows proprietary compilers, which use 0.0
>> in the low word. */
>> buf[2] = 0;
>> buf[3] = 0;
>> }
>
> Sounds good, although the comment's a bit on the vitriolic side. ;)
> Surely the long double representation is as much a part of the ABI as
> any other data representation? I.e., it's not that were doing something
> just because another compiler does it. We're doing it because that's
> the platform ABI.
The sign bit might also be a don't-care at this point, in which case both
formats must be supported.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
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