%!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 {
    /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.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

/stepbystep {
    0 dict begin
    /mv 0 def
    /tot 0 def
    {
        /tot exch tot add def
        mv tot gt {
            /mv tot def
        } if
    } forall
    1 mv sub
    end
} bind def

(stepbystep) test.start
[-3 2 -3 4 2] stepbystep 5 eq test
[1 2] stepbystep 1 eq test
[1 -2 -3] stepbystep 5 eq test
test.end