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From: "law at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sources.redhat.com
Subject: [Bug math/13705] New: Bogus FPE on underflow for exp(double)
Date: Fri, 17 Feb 2012 21:08:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=13705

             Bug #: 13705
           Summary: Bogus FPE on underflow for exp(double)
           Product: glibc
           Version: 2.15
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
        AssignedTo: aj@suse.de
        ReportedBy: law@redhat.com
    Classification: Unclassified


Created attachment 6225
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6225
testcase

With floating point trapping enabled, *except* for "underflow"
and "inexact", exp(-1.0e40) will throw a Floating Point Exception.

How reproducible:
Every time.

Steps to Reproduce:
1. Compile attached test programme (g++ test1.cpp)
2. Run program
3.

Actual results:
Floating point exception.

Expected results:
The value 0 should be printed.

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