Function flann_sys::flann_get_point

pub unsafe extern "C" fn flann_get_point(
    index_ptr: flann_index_t, 
    point_id: c_uint
) -> *mut f32

Gets a point from a given index position.

index_ptr = pointer to pre-built index. point_id = index of datapoint to get.

Returns: pointer to datapoint or NULL on miss