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  Function            isallupper - are all characters in string
                                     upper case

  Syntax              boolean isallupper(char *str);

  Prototype in        stringhk.h

  Remarks             checks if all characters in str are upper case.

  Return value        returns TRUE if all characters in str are upper
                      case, FALSE otherwise.

  See also            isallalpha(), isallalphanum(), isalllower()
See Also: isallalpha() isallalphanum() isalllower()
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