re PR libstdc++/9548 (Incorrect results from setf(ios::fixed) and precision(-1) ...

re PR libstdc++/9548 (Incorrect results from setf(ios::fixed) and precision(-1) [DR231])

2003-02-06  Paolo Carlini  <pcarlini@unitus.it>

	PR libstdc++/9548
	Implement resolution of DR 231 (Ready)
	* include/bits/locale_facets.h (__num_base::_S_format_float):
	Change declaration: return void, remove __prec parameter.
	* src/locale.cc (__num_base::_S_format_float): Implement
	resolution of DR 231.
	* include/bits/locale_facets.tcc (num_put::_M_convert_float):
	Tweak uses. Check for negative precision.
	* testsuite/22_locale/num_put/put/char/6.cc: Add
	* testsuite/22_locale/num_put/put/wchar_t/6.cc: Likewise.

From-SVN: r62492