Re: Use of C99 extra long double math functions after r236148

On 13 Jul 2012, at 17:40, Warner Losh wrote:

> We shouldn't be gating the new math on an issue that only affects =
sparc64 machines

Mostly agreed, but it's worth noting that the APCS for ARMv8[1] =
specifies that long double should be  IEEE 754- 2008 quad precision.  I =
think ARMv8 is going to be an important platform for us in the next few =
years, so ld128 is not just for SPARC (I'd also like us to switch to =
ld128 on PowerPC, since that's the ABI that everyone else uses, but I =
don't anticipate PowerPC becoming tier 1 any time soon, whereas I would =
very much like to see ARMv8 become tier 1 within a year of shipping =
silicon).

That's not to say that we should hold things up waiting for ld128 =
versions, just that adding ld128 versions soon after adding ld80 ones =
would be very helpful.

David

[1] =
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055a/IHI0055A_aapcs64=
..pdf=
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