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re PR libstdc++/19642 (streaming doubles is very slow compared to sprintf)

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2005-01-30  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/19642
	* config/locale/generic/c_locale.h (__convert_from_v): Switch only
	LC_NUMERIC, and only when actually != "C".

From-SVN: r94440
This commit is contained in:
Paolo Carlini 2005-01-30 14:09:58 +00:00 committed by Paolo Carlini
parent 23e044cc1d
commit d2f64e95fd
2 changed files with 20 additions and 6 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2005-01-30 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/19642
* config/locale/generic/c_locale.h (__convert_from_v): Switch only
LC_NUMERIC, and only when actually != "C".
2005-01-28 Paolo Carlini <pcarlini@suse.de>
* include/tr1/type_traits (is_function): Minor consistency tweaks.

20
libstdc++-v3/config/locale/generic/c_locale.h
View File

@ -59,18 +59,26 @@ namespace std
const char* __fmt,
_Tv __v, const __c_locale&, int __prec)
{
char* __old = std::setlocale(LC_ALL, NULL);
char* __sav = new char[std::strlen(__old) + 1];
std::strcpy(__sav, __old);
std::setlocale(LC_ALL, "C");
char* __old = std::setlocale(LC_NUMERIC, NULL);
char* __sav = NULL;
if (std::strcmp(__old, "C"))
{
__sav = new char[std::strlen(__old) + 1];
std::strcpy(__sav, __old);
std::setlocale(LC_NUMERIC, "C");
}
#ifdef _GLIBCXX_USE_C99
const int __ret = std::snprintf(__out, __size, __fmt, __prec, __v);
#else
const int __ret = std::sprintf(__out, __fmt, __prec, __v);
#endif
std::setlocale(LC_ALL, __sav);
delete [] __sav;
if (__sav)
{
std::setlocale(LC_NUMERIC, __sav);
delete [] __sav;
}
return __ret;
}
}