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* [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
@ 2024-05-30 9:26 jeevitha at linux dot ibm.com
2024-05-30 9:30 ` [Bug math/31818] " jeevitha at linux dot ibm.com
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: jeevitha at linux dot ibm.com @ 2024-05-30 9:26 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Bug ID: 31818
Summary: math/test-float128-log2p1, math/test-float64x-log2p1,
math/test-ldouble-log2p1 fails on
ppc64le-power8-nomultiarch
Product: glibc
Version: 2.39
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jeevitha at linux dot ibm.com
Target Milestone: ---
Log2p1 was implemented in commit
id(79c52daf4740b00bef43e4f5a4281b3480459b38)and maximum allowed error was
updated for powerpc in the commit (f83e461f1014598a5cb4c89407ce303b9f0bd8ac).
We are seeing the tests was failing with "--disable-multi-arch" in power8 LE.
The issue with those test cases is that the expected ULP from
"sysdeps/powerpc/fpu/libm-test-ulps" does not match the result. The expected
ULP for float128 is 2, but we are getting 3 for Power8.
However, there are no issues on Power9 and Power10 since their output has error
of 2 ulp. Can we change the ulps for float128 to 3? Is this a reasonable
change.
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
@ 2024-05-30 9:30 ` jeevitha at linux dot ibm.com
2024-05-30 9:31 ` jeevitha at linux dot ibm.com
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jeevitha at linux dot ibm.com @ 2024-05-30 9:30 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Jeevitha P. <jeevitha at linux dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |adhemerval.zanella at linaro dot o
| |rg, jsm28 at gcc dot gnu.org
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
2024-05-30 9:30 ` [Bug math/31818] " jeevitha at linux dot ibm.com
@ 2024-05-30 9:31 ` jeevitha at linux dot ibm.com
2024-05-30 9:32 ` jeevitha at linux dot ibm.com
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jeevitha at linux dot ibm.com @ 2024-05-30 9:31 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Jeevitha P. <jeevitha at linux dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Host| |powerpc
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
2024-05-30 9:30 ` [Bug math/31818] " jeevitha at linux dot ibm.com
2024-05-30 9:31 ` jeevitha at linux dot ibm.com
@ 2024-05-30 9:32 ` jeevitha at linux dot ibm.com
2024-05-30 10:21 ` schwab@linux-m68k.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jeevitha at linux dot ibm.com @ 2024-05-30 9:32 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Jeevitha P. <jeevitha at linux dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc
Host|powerpc |
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
` (2 preceding siblings ...)
2024-05-30 9:32 ` jeevitha at linux dot ibm.com
@ 2024-05-30 10:21 ` schwab@linux-m68k.org
2024-05-30 17:23 ` jsm28 at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: schwab@linux-m68k.org @ 2024-05-30 10:21 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Host| |powerpc*-*-*
Target|powerpc |
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
` (3 preceding siblings ...)
2024-05-30 10:21 ` schwab@linux-m68k.org
@ 2024-05-30 17:23 ` jsm28 at gcc dot gnu.org
2024-06-06 14:42 ` bergner at linux dot ibm.com
2024-06-21 10:18 ` jeevitha at linux dot ibm.com
6 siblings, 0 replies; 8+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2024-05-30 17:23 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
It's generally reasonable to update ulps like that (small differences can often
result from e.g. compiler choices about whether to use fused operations).
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
` (4 preceding siblings ...)
2024-05-30 17:23 ` jsm28 at gcc dot gnu.org
@ 2024-06-06 14:42 ` bergner at linux dot ibm.com
2024-06-21 10:18 ` jeevitha at linux dot ibm.com
6 siblings, 0 replies; 8+ messages in thread
From: bergner at linux dot ibm.com @ 2024-06-06 14:42 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Peter Bergner <bergner at linux dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bergner at linux dot ibm.com
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* [Bug math/31818] math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch
2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
` (5 preceding siblings ...)
2024-06-06 14:42 ` bergner at linux dot ibm.com
@ 2024-06-21 10:18 ` jeevitha at linux dot ibm.com
6 siblings, 0 replies; 8+ messages in thread
From: jeevitha at linux dot ibm.com @ 2024-06-21 10:18 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31818
Jeevitha P. <jeevitha at linux dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Jeevitha P. <jeevitha at linux dot ibm.com> ---
This issue has been resolved by changing the ULP value for float128. Issue
resolved by the following commit.
commit 71dafdf5f19dd2b0729e4774149944911a405bc6
Author: Florian Weimer <fweimer@redhat.com>
AuthorDate: Thu Jun 20 11:07:17 2024 +0200
Commit: Florian Weimer <fweimer@redhat.com>
CommitDate: Thu Jun 20 12:15:31 2024 +0200
powerpc: Update ulps
Results based on POWER8 and POWER9 machines running
powerpc64-linux-gnu, with and without --disable-multi-arch.
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2024-05-30 9:26 [Bug math/31818] New: math/test-float128-log2p1, math/test-float64x-log2p1, math/test-ldouble-log2p1 fails on ppc64le-power8-nomultiarch jeevitha at linux dot ibm.com
2024-05-30 9:30 ` [Bug math/31818] " jeevitha at linux dot ibm.com
2024-05-30 9:31 ` jeevitha at linux dot ibm.com
2024-05-30 9:32 ` jeevitha at linux dot ibm.com
2024-05-30 10:21 ` schwab@linux-m68k.org
2024-05-30 17:23 ` jsm28 at gcc dot gnu.org
2024-06-06 14:42 ` bergner at linux dot ibm.com
2024-06-21 10:18 ` jeevitha at linux dot ibm.com
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