[petsc-dev] quad precision

[Satish Balay]

On Thu, 17 Mar 2011, Lisandro Dalcin wrote:

> On 16 March 2011 21:00, Barry Smith <bsmith at mcs.anl.gov> wrote:
> >
> >
> > On Feb 8, 2011, at 6:31 AM, Jed Brown wrote:
> >
> >> > GCC now ships with the LGPL-licensed libquadmath library, which provides for targets with a __float128 datatype quad-precision mathematical functions. __float128 is available for targets on 32-bit x86, x86-64 and Itanium architectures. The libquadmath library is automatically built on such targets when building the Fortran compiler.
> >>
> >> http://gcc.gnu.org/gcc-4.6/changes.html#libquadmath
> >> http://gcc.gnu.org/onlinedocs/libquadmath/
> >>
> >> Looks like this is something that actually works. GCC-4.6 is probably about two months away from a release, but this should be functional now. Perhaps it should be supported by petsc-3.2?
> >
> >  Done (use ./configure --with-precision=__float128 --download-qblaslapack
> >
> 
> I got an error about "Unknown comression type in URL:
> http://ftp.mcs.anl.gov/pub/petsc/externalpackages/qblaslapack.gz"...
> (BTW, the error message has a typo, should be "compression"). The

pushed

> trivial fix below solved the issue.. PLEASE PUSH!

pushed

satish