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[Bug math/16516] spurious underflow exception from erff
- From: "zimmerma+gcc at loria dot fr" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 07 Feb 2014 08:10:35 +0000
- Subject: [Bug math/16516] spurious underflow exception from erff
- Auto-submitted: auto-generated
- References: <bug-16516-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=16516
--- Comment #3 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
idem in extended precision:
Testing function erf for exponent 0 [seed=8344].
rounding mode MPFR_RNDN:
wrong underflow flag for x=3.8b7f12369ded5518@-4096
library gives 4.0000000000000028@-4096
mpfr gives 4.0000000000000028@-4096
underflow: mpfr 0, library 16
Note the glibc result is *above* the smallest normal number.
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