On 8/13/07, cwitty <[EMAIL PROTECTED]> wrote:
> > (3a)What I think might be the best idea, at least on Linux, is to change
> > the compilation settings for quad double so that the fpu fix is not
> > needed. There are two ways to do this: If a processor supports sse2,
> > then passing gcc -march=whatever -msse2 -mfpmath=sse (maybe the -march
> > isn't needed) will cause gcc to use sse registers and instructions for
> > doubles, and these have the proper precision. In fact, gcc already does
> > this by default for x86-64 cpus, so the quad double package doesn't even
> > need the fpu fix on those architectures. Also, this has the added
> > benefit of being faster.
>
> Yes, this certainly sounds like a good idea. In fact, most of SAGE
> should be built this way whenever possible. (This might mean having
> two different binary downloads for x86 Linux, though.)
This sounds like the best solution in most cases. Could somebody volunteer
to try this, i.e., rebuild the quaddouble package that way, do "sage
-ba", then run all
doctests ("make test") and report back with the results?
William
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