sysdeps/ieee754/ldbl-opt/w_jnl.c

#include <math_ldbl_opt.h>
#undef weak_alias
#define weak_alias(n,a)
#include <math/w_jnl.c>
long_double_symbol (libm, __jnl, jnl);
long_double_symbol (libm, __ynl, ynl);