[Bug libstdc++/20909] New: incorrect floating point format

[Bug libstdc++/20909] New: incorrect floating point format

[cpp at tempest-sw dot com]

In some locales, certain floating point numbers are printed incorrectly. (I
think the problem lies with numbers with one significant digits, in scientific
format, with a thousands separator and thousands grouping.)

For example:

#include <iostream>
#include <locale>
#include <ostream>

int main()
{
  std::wcout.imbue(std::locale("en_US"));
  std::wcout << 2e10 << '\n';
}

Prints "2e,+10".

-- 
           Summary: incorrect floating point format
           Product: gcc
           Version: 3.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cpp at tempest-sw dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[pcarlini at suse dot de]

------- Additional Comments From pcarlini at suse dot de  2005-04-08 21:00 -------
Yes, this is actually a very long standing bug, which we hoped didn't trigger
in common situations (because the fix probably is rather ugly :(
Ok, let's finally work on it. Thanks for your report.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pcarlini at suse dot de
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-04-08 21:00:56
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-09 00:09 -------
Subject: Bug 20909

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	paolo@gcc.gnu.org	2005-04-09 00:08:59

Modified files:
	libstdc++-v3   : ChangeLog 
	libstdc++-v3/include/bits: locale_facets.tcc 
Added files:
	libstdc++-v3/testsuite/22_locale/num_put/put/char: 20909.cc 
	libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t: 20909.cc 

Log message:
	2005-04-08  Paolo Carlini  <pcarlini@suse.de>
	
	PR libstdc++/20909
	* include/bits/locale_facets.tcc (num_put<>::_M_insert_float):
	Don't even try to group numbers like 2e20, i.e., no decimal
	point, scientific notation.
	* testsuite/22_locale/num_put/put/char/20909.cc: New.
	* testsuite/22_locale/num_put/put/wchar_t/20909.cc: Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/ChangeLog.diff?cvsroot=gcc&r1=1.2968&r2=1.2969
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/include/bits/locale_facets.tcc.diff?cvsroot=gcc&r1=1.211&r2=1.212
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/testsuite/22_locale/num_put/put/char/20909.cc.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t/20909.cc.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-09 00:15 -------
Subject: Bug 20909

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	paolo@gcc.gnu.org	2005-04-09 00:14:59

Modified files:
	libstdc++-v3   : ChangeLog 
	libstdc++-v3/include/bits: locale_facets.tcc 
Added files:
	libstdc++-v3/testsuite/22_locale/num_put/put/char: 20909.cc 
	libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t: 20909.cc 

Log message:
	2005-04-08  Paolo Carlini  <pcarlini@suse.de>
	
	PR libstdc++/20909
	* include/bits/locale_facets.tcc (num_put<>::_M_insert_float):
	Don't even try to group numbers like 2e20, i.e., no decimal
	point, scientific notation.
	* testsuite/22_locale/num_put/put/char/20909.cc: New.
	* testsuite/22_locale/num_put/put/wchar_t/20909.cc: Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.2917.2.21&r2=1.2917.2.22
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/include/bits/locale_facets.tcc.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.211&r2=1.211.12.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/testsuite/22_locale/num_put/put/char/20909.cc.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libstdc++-v3/testsuite/22_locale/num_put/put/wchar_t/20909.cc.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[pcarlini at suse dot de]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[mmitchel at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.0                       |4.0.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[pcarlini at suse dot de]

------- Additional Comments From pcarlini at suse dot de  2005-04-25 09:52 -------
.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909

[Bug libstdc++/20909] incorrect floating point format

[pcarlini at suse dot de]

------- Additional Comments From pcarlini at suse dot de  2005-04-25 09:51 -------
Fixed for 4.0.0.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.1                       |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20909