1#include <math-type-macros-double.h>
2#undef __USE_WRAPPER_TEMPLATE
3#define __USE_WRAPPER_TEMPLATE 1
4#undef declare_mgen_alias
5#define declare_mgen_alias(a, b)
6#include <w_log2_template.c>
7versioned_symbol (libm, __log2, log2, GLIBC_2_29);
8libm_alias_double_other (__log2, log2)
9

source code of glibc/math/w_log2.c