#10042: Doctest failure in sage/rings/polynomial/polynomial_element.pyx
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Reporter: mpatel | Owner: mvngu
Type: defect | Status: needs_work
Priority: blocker | Milestone: sage-4.6
Component: doctest | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: report upstream |
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Comment(by dimpase):
Replying to [comment:62 leif]:
> Replying to [comment:60 dimpase]:
> > there no SSEx on PPC, it's an x86 thing, IMHO...
>
> Of course not (nor 387), but some IBM-specific double-double type.
>
> > OK, so perhaps there is a miracle compiler switch on PPC that will do
the same trick.
>
> {{{
> -fdefault-double-8
> Set the "DOUBLE PRECISION" type to an 8 byte wide type. If
-fdefault-real-8 is given, "DOUBLE PRECISION" would instead be promoted to
16 bytes
> if possible, and -fdefault-double-8 can be used to prevent
this. The kind of real constants like "1.d0" will not be changed by
-fdefault-real-8
> though, so also -fdefault-double-8 does not affect it.
> }}}
>
> ;-)
unfortunately this does not help on MacOSX 10.5 PPC.
I tried to recompile lapack with extra "-fdefault-double-8 -fdefault-
real-8" options put into sage_fortran, to no avail.
One cannot add -fdefault-double-8 option alone, as the compiler (gfortran
4.2.1)
says that -fdefault-real-8 is required along with it.
And -fdefault-real-8 alone produces code that does not work.
The next attempt will be with "-fdefault-real-8 -mlong-double-128
-lmx"...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10042#comment:63>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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