title: atoi() with other languages
body: <p>I am working on a internationalization project. Do other languages, such as Arabic or Chinese,  use different representations for digits besides 0-9?  If so, are there versions of atoi() that will account for these other representations? </p>
  
  <p>I should add that I am mainly concerned with parsing input from the user.  If the users types in some other representation I want to be sure that I recognize it as a number and treat it accordingly.</p>