pub unsafe extern "C" fn bsearch(
_Key: *const c_void,
_Base: *const c_void,
_NumOfElements: size_t,
_SizeOfElements: size_t,
_PtFuncCompare: Option<unsafe extern "C" fn(arg1: *const c_void, arg2: *const c_void) -> c_int>,
) -> *mut c_void