pub unsafe extern "C" fn NewSplayTree(
arg1: Option<unsafe extern "C" fn(arg1: *const c_void, arg2: *const c_void) -> c_int>,
arg2: Option<unsafe extern "C" fn(arg1: *mut c_void) -> *mut c_void>,
arg3: Option<unsafe extern "C" fn(arg1: *mut c_void) -> *mut c_void>,
) -> *mut SplayTreeInfo