This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH][BZ #3268] Add fma single/double implementations to soft-fp
Joseph S. Myers wrote:
>On Fri, 13 Oct 2006, Steven Munroe wrote:
>
>
>>typedef int QItype __attribute__ ((mode (QI)));
>>
>
>QImode is always char. What you want is TImode (128 bits), but it's only
>available on 64-bit targets. But since all you need here is an
>
Ya... TItype (The "T" in the type versu the "_Q" ending on the macros is
confusing.
What about TFtype? is it also limited to platforms that implement long
double? In this case it is only use for a simple transfer to/from the
packed structure.
>intermediate opaque representation, perhaps struct { long long x[2]; }
>would suffice. (With associated changes to allow the "quad" code to use
>this structure instead of "long double" on targets where it's only used as
>an intermediate.)
>
>I agree that the best approach is to avoid the intermediate pack/unpack
>somehow so that you never need use the quad representation.
>
>