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[Bug math/15536] ulp (0x0.0p0) is not FP_SUBNORMAL!
- From: "joseph at codesourcery dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 31 May 2013 19:28:32 +0000
- Subject: [Bug math/15536] ulp (0x0.0p0) is not FP_SUBNORMAL!
- Auto-submitted: auto-generated
- References: <bug-15536-131 at http dot sourceware dot org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15536
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Fri, 31 May 2013, carlos at redhat dot com wrote:
> Is there a publicly available standard that describes IBM extended precision
> long doubles?
libgcc/config/rs6000/ibm-ldouble-format in a GCC source tree.
> The smallest value I can compute is 2^(-1075):
> 4.94065645841246544177e-324
> 0x0.00000000000010000000p-1022
You have an off-by-one error there. It's 0x1p-1074.
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