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* [Bug libstdc++/59421] New: stof(), stod() wrong result
@ 2013-12-07 23:45 stefan.helmert@t-online.de
2013-12-08 0:58 ` [Bug libstdc++/59421] " pinskia at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: stefan.helmert@t-online.de @ 2013-12-07 23:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421
Bug ID: 59421
Summary: stof(), stod() wrong result
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: stefan.helmert@t-online.de
sometimes:
y = stod(str); // with str = "0"
cout << y << endl;
prints out:
0.4167
It depends on where the executable is copied to. It does not depend on
optimisation level. I use c++11.
workaround:
y = stod(""+str+"");
Windows 7 64 bit, mingw-builds/x64-4.8.1-posix-seh-rev5
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug libstdc++/59421] stof(), stod() wrong result
2013-12-07 23:45 [Bug libstdc++/59421] New: stof(), stod() wrong result stefan.helmert@t-online.de
@ 2013-12-08 0:58 ` pinskia at gcc dot gnu.org
2013-12-08 0:59 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2013-12-08 0:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2013-12-08
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Do you have a full testcase that is able to compile and work?
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug libstdc++/59421] stof(), stod() wrong result
2013-12-07 23:45 [Bug libstdc++/59421] New: stof(), stod() wrong result stefan.helmert@t-online.de
2013-12-08 0:58 ` [Bug libstdc++/59421] " pinskia at gcc dot gnu.org
@ 2013-12-08 0:59 ` pinskia at gcc dot gnu.org
2013-12-09 21:37 ` stefan.helmert@t-online.de
2013-12-10 23:52 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2013-12-08 0:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> Do you have a full testcase that is able to compile and work?
s/work/run/
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/59421] stof(), stod() wrong result
2013-12-07 23:45 [Bug libstdc++/59421] New: stof(), stod() wrong result stefan.helmert@t-online.de
2013-12-08 0:58 ` [Bug libstdc++/59421] " pinskia at gcc dot gnu.org
2013-12-08 0:59 ` pinskia at gcc dot gnu.org
@ 2013-12-09 21:37 ` stefan.helmert@t-online.de
2013-12-10 23:52 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: stefan.helmert@t-online.de @ 2013-12-09 21:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421
--- Comment #3 from Stefan Helmert <stefan.helmert@t-online.de> ---
OK, please try this code:
https://github.com/TheTesla/DigiKeyCSV2KiCadSCHpatcher/tree/gcctest
The relevant function is norm_value().
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/59421] stof(), stod() wrong result
2013-12-07 23:45 [Bug libstdc++/59421] New: stof(), stod() wrong result stefan.helmert@t-online.de
` (2 preceding siblings ...)
2013-12-09 21:37 ` stefan.helmert@t-online.de
@ 2013-12-10 23:52 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2013-12-10 23:52 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59421
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Is all that code really necessary to demonstrate the bug?
Please read http://gcc.gnu.org/bugs/ again (you did read it before submitting
,as requested, right?)
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-12-10 23:52 UTC | newest]
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2013-12-07 23:45 [Bug libstdc++/59421] New: stof(), stod() wrong result stefan.helmert@t-online.de
2013-12-08 0:58 ` [Bug libstdc++/59421] " pinskia at gcc dot gnu.org
2013-12-08 0:59 ` pinskia at gcc dot gnu.org
2013-12-09 21:37 ` stefan.helmert@t-online.de
2013-12-10 23:52 ` redi at gcc dot gnu.org
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