-/* Copyright (C) 2011-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- 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/>. */
-
-#include <fenv.h>
-#include <math.h>
-#include <math_private.h>
-
-
-/* wrapper log2(x) */
-double
-__log2 (double x)
-{
- if (__builtin_expect (islessequal (x, 0.0), 0) && _LIB_VERSION != _IEEE_)
- {
- if (x == 0.0)
- {
- feraiseexcept (FE_DIVBYZERO);
- return __kernel_standard (x, x, 48); /* log2(0) */
- }
- else
- {
- feraiseexcept (FE_INVALID);
- return __kernel_standard (x, x, 49); /* log2(x<0) */
- }
- }
-
- return __ieee754_log2 (x);
-}
-weak_alias (__log2, log2)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__log2, __log2l)
-weak_alias (__log2, log2l)
-#endif
+#include <math-type-macros-double.h>
+#undef __USE_WRAPPER_TEMPLATE
+#define __USE_WRAPPER_TEMPLATE 1
+#undef declare_mgen_alias
+#define declare_mgen_alias(a, b)
+#include <w_log2_template.c>
+versioned_symbol (libm, __log2, log2, GLIBC_2_29);
+libm_alias_double_other (__log2, log2)