soft-fp: make extensions quiet signaling NaNs (bug 16041)

[David Miller]

From: "Joseph S. Myers" <joseph@codesourcery.com>
Date: Wed, 16 Oct 2013 22:03:37 +0000

> This patch fixes bug 16041, soft-fp extensions of signaling NaNs to a
> wider floating-point type producing another signaling NaN when they
> should produce a quiet NaN.
> 
> Tested for powerpc-nofpu.  David, this should fix the problem you
> reported for SPARC (the relevant test in math/basic-test.c is disabled
> for powerpc because of issues with conversions to/from long double).

Thanks, testing this now Joseph.