File::Stat#rdev

static VALUE
rb_stat_rdev(VALUE self)
{
#if RUBY_USE_STATX
    unsigned int m = get_stat(self)->stx_rdev_major;
    unsigned int n = get_stat(self)->stx_rdev_minor;
    return ULL2NUM(makedev(m, n));
#elif !defined(HAVE_STRUCT_STAT_ST_RDEV)
    return Qnil;
#elif SIZEOF_STRUCT_STAT_ST_RDEV <= SIZEOF_DEV_T
    return DEVT2NUM(get_stat(self)->ST_(rdev));
#elif SIZEOF_STRUCT_STAT_ST_RDEV <= SIZEOF_LONG
    return ULONG2NUM(get_stat(self)->ST_(rdev));
#else
    return ULL2NUM(get_stat(self)->ST_(rdev));
#endif
}