-/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <math.h>
#include <libm-alias-double.h>
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29) \
+ || defined NO_LONG_DOUBLE \
+ || defined LONG_DOUBLE_COMPAT)
/* wrapper log2(x) */
double
-__log2 (double x)
+__log2_compat (double x)
{
if (__builtin_expect (islessequal (x, 0.0), 0) && _LIB_VERSION != _IEEE_)
{
return __ieee754_log2 (x);
}
-libm_alias_double (__log2, log2)
+# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29)
+compat_symbol (libm, __log2_compat, log2, GLIBC_2_1);
+# endif
+# ifdef NO_LONG_DOUBLE
+weak_alias (__log2_compat, log2l)
+# endif
+# ifdef LONG_DOUBLE_COMPAT
+/* Work around gas bug "multiple versions for symbol". */
+weak_alias (__log2_compat, __log2_compat_alias)
+
+LONG_DOUBLE_COMPAT_CHOOSE_libm_log2l (
+ compat_symbol (libm, __log2_compat_alias, log2l, FIRST_VERSION_libm_log2l), );
+# endif
#endif