On Mon, 06 Oct 2014 23:41:16 +0200 Julian Taylor <jtaylor.deb...@googlemail.com> wrote:
> On 06.10.2014 23:34, Neil Williams wrote: > > Something odd with the *386 builds, i386, kfreebsd-i386 and > > hurd-i386: > > > > i386 chroot: > > -1.3130352854993315 > > +1.3130352854993312 > > > > Other 32bit architectures don't have a problem. > > > > thats very expected, i386 numerical precision depends on compiler > optimizations as the fpu has 80 bit width while double has 64. > You need to bump the error bounds or use special flags like > -ffloat-store or -fpmath=sse to avoid it. OK, thanks. We're going to tweak the patch to use deterministic precision, based on the highest precision available on all current architectures. -- Neil Williams ============= http://www.linux.codehelp.co.uk/
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