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* [Bug math/13914] New: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception
@ 2012-03-27 23:27 jsm28 at gcc dot gnu.org
2012-03-28 0:23 ` [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions jsm28 at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-03-27 23:27 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13914
Bug #: 13914
Summary: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception
Product: glibc
Version: 2.15
Status: NEW
Severity: normal
Priority: P2
Component: math
AssignedTo: unassigned@sourceware.org
ReportedBy: jsm28@gcc.gnu.org
Classification: Unclassified
On x86, exp10l (-LDBL_MAX) raises a spurious OVERFLOW exception; this is an
underflow case, not overflow. Testcase:
#include <errno.h>
#include <fenv.h>
#include <math.h>
#include <stdio.h>
#include <float.h>
volatile long double d = -LDBL_MAX;
int
main (void)
{
feclearexcept (FE_ALL_EXCEPT);
errno = 0;
volatile long double r = exp10l (d);
if (fetestexcept (FE_DIVBYZERO))
printf ("DIVBYZERO ");
if (fetestexcept (FE_INEXACT))
printf ("INEXACT ");
if (fetestexcept (FE_INVALID))
printf ("INVALID ");
if (fetestexcept (FE_OVERFLOW))
printf ("OVERFLOW ");
if (fetestexcept (FE_UNDERFLOW))
printf ("UNDERFLOW ");
printf ("%.18Lg %m\n", r);
return 0;
}
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* [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions
2012-03-27 23:27 [Bug math/13914] New: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception jsm28 at gcc dot gnu.org
@ 2012-03-28 0:23 ` jsm28 at gcc dot gnu.org
2012-03-28 0:27 ` jsm28 at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-03-28 0:23 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13914
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|exp10l (-LDBL_MAX) raises |exp10l (-LDBL_MAX) raises
|spurious OVERFLOW exception |spurious OVERFLOW and
| |INVALID exceptions
--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-03-28 00:09:48 UTC ---
There is also a spurious INVALID exception.
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* [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions
2012-03-27 23:27 [Bug math/13914] New: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception jsm28 at gcc dot gnu.org
2012-03-28 0:23 ` [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions jsm28 at gcc dot gnu.org
@ 2012-03-28 0:27 ` jsm28 at gcc dot gnu.org
2012-05-06 18:25 ` jsm28 at gcc dot gnu.org
2014-06-26 13:41 ` fweimer at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-03-28 0:27 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13914
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-03-28 00:23:11 UTC ---
exp10l (LDBL_MAX) also has the spurious INVALID exception.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions
2012-03-27 23:27 [Bug math/13914] New: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception jsm28 at gcc dot gnu.org
2012-03-28 0:23 ` [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions jsm28 at gcc dot gnu.org
2012-03-28 0:27 ` jsm28 at gcc dot gnu.org
@ 2012-05-06 18:25 ` jsm28 at gcc dot gnu.org
2014-06-26 13:41 ` fweimer at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-05-06 18:25 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13914
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-05-06 18:25:20 UTC ---
Fixed by:
commit d8b82cad1b525bdcbfff88d218c7c45032e4a3af
Author: Joseph Myers <joseph@codesourcery.com>
Date: Sun May 6 18:23:44 2012 +0000
Fix exp10 inaccuracy and exceptions (bugs 13884, 13914).
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* [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions
2012-03-27 23:27 [Bug math/13914] New: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception jsm28 at gcc dot gnu.org
` (2 preceding siblings ...)
2012-05-06 18:25 ` jsm28 at gcc dot gnu.org
@ 2014-06-26 13:41 ` fweimer at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: fweimer at redhat dot com @ 2014-06-26 13:41 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=13914
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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2012-03-27 23:27 [Bug math/13914] New: exp10l (-LDBL_MAX) raises spurious OVERFLOW exception jsm28 at gcc dot gnu.org
2012-03-28 0:23 ` [Bug math/13914] exp10l (-LDBL_MAX) raises spurious OVERFLOW and INVALID exceptions jsm28 at gcc dot gnu.org
2012-03-28 0:27 ` jsm28 at gcc dot gnu.org
2012-05-06 18:25 ` jsm28 at gcc dot gnu.org
2014-06-26 13:41 ` fweimer at redhat dot com
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