1  #include <math_ldbl_opt.h>
       2  #include <sysdeps/ieee754/dbl-64/s_isnan.c>
       3  #if !IS_IN (libm)
       4  # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
       5  compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0);
       6  compat_symbol (libc, isnan, isnanl, GLIBC_2_0);
       7  # endif
       8  #endif