Function mex_sys::lfind

pub unsafe extern "C" fn lfind(
    _Key: *const c_void, 
    _Base: *const c_void, 
    _NumOfElements: *mut c_uint, 
    _SizeOfElements: c_uint, 
    _PtFuncCompare: Option<unsafe extern "C" fn(_: *const c_void, _: *const c_void) -> c_int>
) -> *mut c_void