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Annotation of 43BSD/contrib/icon/book/f/ackertr.icn, revision 1.1.1.1

1.1       root        1: procedure ackertrace(i,j)
                      2:    static level
                      3:    local result
                      4:    initial level := 0
                      5:    write(repl("x",level +:= 1))
                      6:    if i = 0 then result := j + 1
                      7:    else if j = 0 then result := ackertrace(i - 1,1)
                      8:    else result := ackertrace(i - 1,ackertrace(i,j - 1))
                      9:    level -:= 1
                     10:    return result
                     11: end

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