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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/18196] New: atanf spurious underflows
Date: Thu, 02 Apr 2015 23:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=18196

            Bug ID: 18196
           Summary: atanf spurious underflows
           Product: glibc
           Version: 2.21
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: jsm28 at gcc dot gnu.org

The sysdeps/ieee754/flt-32 version of atanf produces spurious underflow
exceptions for some large arguments.  For example, on x86_64, atanf (0x1p31f)
(whose result is very close to pi/2) produces such an exception.

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