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* [Bug libc/2574] New: Incorrect return from float log10 (0X1.118C6318C6319P+0)
@ 2006-04-14 19:21 hjl at lucon dot org
2006-04-14 19:37 ` [Bug math/2574] " hjl at lucon dot org
2006-04-16 2:45 ` drepper at redhat dot com
0 siblings, 2 replies; 4+ messages in thread
From: hjl at lucon dot org @ 2006-04-14 19:21 UTC (permalink / raw)
To: glibc-bugs
Failure: Test: log10 (0X1.118C6318C6319P+0) == 0X1.D7C3996E6179DP-6
Result:
is: 2.87942159920930862427e-02 0x1.d7c3b200000000000000p-6
should be: 2.87941936403512954712e-02 0x1.d7c39a00000000000000p-6
difference: 2.23517417907714843750e-08 0x1.80000000000000000000p-26
ulp : 12.0000
max.ulp : 0.0000
--
Summary: Incorrect return from float log10 (0X1.118C6318C6319P+0)
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper at redhat dot com
ReportedBy: hjl at lucon dot org
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=2574
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^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug math/2574] Incorrect return from float log10 (0X1.118C6318C6319P+0) 2006-04-14 19:21 [Bug libc/2574] New: Incorrect return from float log10 (0X1.118C6318C6319P+0) hjl at lucon dot org @ 2006-04-14 19:37 ` hjl at lucon dot org 2006-04-16 2:45 ` drepper at redhat dot com 1 sibling, 0 replies; 4+ messages in thread From: hjl at lucon dot org @ 2006-04-14 19:37 UTC (permalink / raw) To: glibc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Component|libc |math GCC build triplet| |x86_64-unknown-linux-gnu GCC host triplet| |x86_64-unknown-linux-gnu GCC target triplet| |x86_64-unknown-linux-gnu http://sourceware.org/bugzilla/show_bug.cgi?id=2574 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug math/2574] Incorrect return from float log10 (0X1.118C6318C6319P+0) 2006-04-14 19:21 [Bug libc/2574] New: Incorrect return from float log10 (0X1.118C6318C6319P+0) hjl at lucon dot org 2006-04-14 19:37 ` [Bug math/2574] " hjl at lucon dot org @ 2006-04-16 2:45 ` drepper at redhat dot com 1 sibling, 0 replies; 4+ messages in thread From: drepper at redhat dot com @ 2006-04-16 2:45 UTC (permalink / raw) To: glibc-bugs ------- Additional Comments From drepper at redhat dot com 2006-04-16 02:45 ------- libm bugs remain suspended until somebody comes up with a patch. -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |SUSPENDED http://sourceware.org/bugzilla/show_bug.cgi?id=2574 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <bug-2574-131@http.sourceware.org/bugzilla/>]
* [Bug math/2574] Incorrect return from float log10 (0X1.118C6318C6319P+0) [not found] <bug-2574-131@http.sourceware.org/bugzilla/> @ 2012-02-26 17:27 ` jsm28 at gcc dot gnu.org 0 siblings, 0 replies; 4+ messages in thread From: jsm28 at gcc dot gnu.org @ 2012-02-26 17:27 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=2574 Joseph Myers <jsm28 at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|SUSPENDED |RESOLVED Resolution| |INVALID --- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-02-26 17:26:48 UTC --- When the argument is rounded to float (0X1.118C64P+0), the correctly rounded result becomes 0X1.D7C3B0P-6, so the error is 1ulp not 12ulp, and since there's already a test of log10f in the testsuite with a 2ulp error recorded in libm-test-ulps for x86_64, I don't think it's useful to add this test as well or keep a bug open for this 1ulp error. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-02-26 17:27 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2006-04-14 19:21 [Bug libc/2574] New: Incorrect return from float log10 (0X1.118C6318C6319P+0) hjl at lucon dot org
2006-04-14 19:37 ` [Bug math/2574] " hjl at lucon dot org
2006-04-16 2:45 ` drepper at redhat dot com
[not found] <bug-2574-131@http.sourceware.org/bugzilla/>
2012-02-26 17:27 ` jsm28 at gcc dot gnu.org
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