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CHRCMP

 INTEGER FUNCTION  CHRCMP (TEXTA,TEXTB,LENGTH)
 (Compare Characters)

 Given two character strings in TEXTA(*) and TEXTB(*), compare  "LENGTH"
 characters.  Return -K, 0, or  +K for A .LT. B,  A .EQ.  B, and A  .GT.
 B, respectively,  where  the  comparisons  are  done  using  the  ASCII
 collating sequence, and  K is the  index of the  first character  which
 differs in the two strings.  If "LENGTH" is less than 1, CHRCM2 = 0  is
 returned.  Upper- and lower-case letters are treated as distinct.