acconfig.h (_GLIBCPP_USE_C99): Add.

acconfig.h (_GLIBCPP_USE_C99): Add.

2001-04-19  Benjamin Kosnik  <bkoz@redhat.com>

	* acconfig.h (_GLIBCPP_USE_C99): Add.
	* config.h.in: Regenerate.
	* acinclude.m4 (GLIBCPP_ENABLE_C99): New macro. Test for ISO/IEC
	9899: 1999 support.
	* aclocal.m4: Regenerate.
	* configure.in (GLIBCPP_ENABLE_C99): Use it, on by default.
	* configure: Regenerate.
	* configure.in (GLIBCPP_ENABLE_LONG_LONG): Set default to yes.
	* configure: Regenerate.
	* include/c_std/bits/std_cwchar.h: Put wcstold, wcstoll, wcstoull
	into c99.
	* include/c_std/bits/std_cmath.h: Bring C99 functions into c99
	namespace.
	* include/c_std/bits/std_cstdlib.h: Same.
	* docs/html/configopts.html: Update.
	* testsuite/26_numerics/c99_macros.cc: Edit, use cmath instead of
	math.h
	(test_c99_classify): Add.
	* config/os/gnu-linux/bits/os_defines.h (_GNU_SOURCE): Remove.
	(_ISOC99_SOURCE): Remove.

	* include/bits/stl_algo.h: Use _GLIBCPP_HAVE_DRAND48.
	* include/bits/c++config (__STL_ASSERTIONS): Simplify.
	* acinclude.m4 (GLIBCPP_CHECK_STDLIB_SUPPORT): Add check for drand48.
	* aclocal.m4: Regenerate.
	* configure: Regenerate.

From-SVN: r41451