%!PS

% begin included library code
% see https://github.com/Firedrake/postscript-libraries/
/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

/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


% end included library code

/binaryflip {
    3 dict begin
    /n exch def
    /m n def
    /r 0 def
    {
        m 0 eq {
            exit
        } if
        /m m -1 bitshift def
        /r r 1 add def
    } loop
    1 r bitshift 1 sub n sub
    end
} bind def

(binaryflip) test.start
5 binaryflip 2 eq test
4 binaryflip 3 eq test
6 binaryflip 1 eq test
test.end