%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def

/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def


% end included library code

/concat {
    0 dict begin
    /b0 exch def
    /a0 exch def
    b0 0 eq {
        10 a0 mul
    } {
        /a a0 def
        /b b0 def
        {
            b 0 le {
                exit
            } if
            /a a 10 mul def
            /b b 10 idiv def
        } loop
        a b0 add
    } ifelse
    end
} bind def

/concatenationvalue {
    0 dict begin
    /a exch def
    0
    0 1 a length 1 sub 2 idiv {
        /i exch def
        /j a length 1 sub i sub def
        i j eq {
            a i get add
        } {
            a i get a j get concat add
        } ifelse
    } for
} bind def

(concatenationvalue) test.start
[6 12 25 1] concatenationvalue 1286 eq test
[10 7 31 5 2 2] concatenationvalue 489 eq test
[1 2 10] concatenationvalue 112 eq test
test.end