pub unsafe extern "C" fn ddsrt_avl_ctreedef_init_r(
td: *mut ddsrt_avl_ctreedef_t,
avlnodeoffset: usize,
keyoffset: usize,
comparekk_r: ddsrt_avl_compare_r_t,
cmp_arg: *mut c_void,
augment: ddsrt_avl_augment_t,
flags: u32,
)