[petsc-dev] quad precision

Jed Brown jed at 59A2.org
Tue Feb 8 06:31:15 CST 2011

> 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.


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?
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