Function tskit::bindings::tsk_tree_get_num_samples

pub unsafe extern "C" fn tsk_tree_get_num_samples(
    self_: *const tsk_tree_t,
    u: tsk_id_t,
    ret_num_samples: *mut tsk_size_t
) -> c_int

@brief Counts the number of samples in the subtree rooted at a node.

@rst Returns the number of samples descending from a particular node, including the node itself.

This is a constant time operation. @endrst

@param self A pointer to a tsk_tree_t object. @param u The tree node. @param ret_num_samples A tsk_size_t pointer to store the returned number of samples. @return 0 on success or a negative value on failure.