How to convert the input rectangle, specified as [x y width height] into a list of four [x y] corner points in R2014a version

 I tried using bbox2points function.But it looks like this function is present in R2014b version and not in R2014a version.Is there any other alternative, other than getting the new version?? Because getting the new version is gonno take time.I badly need the code,please help!!