The function BWW calculates depending on the mode the word value of a given string, the cross sum of the word value or the iterated cross sum.

• alphabet mode defines the alphabet to be used and how to deal with Ä, Ö, Ü
  0: A-Z without any special characters
  1: A-Z, Ä Ö Ü ß => 27 – 30
  2: A-Z, Ä=AE = 1, 5, … ß=SS = 19,19
  3: A-Z, Ä=AE=1+5=6, … ß=SS=19+19=38
• mode
  0: Buchstabenwortwert
  1: Cross sum
  2: Iteraded Cross sum

BWW(string, alphabet mode, mode)