%!PS

% begin included library code

/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

/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/deepeq {
    2 dict begin
    /a exch def
    /b exch def
    a type b type eq {
        a type /dicttype eq {
            a length b length eq {
                <<
                    a {
                        pop
                        true
                    } forall
                    b {
                        pop
                        true
                    } forall
                >>
                true exch
                {
                    pop
                    dup a exch known {
                        dup b exch known {
                            dup a exch get exch b exch get deepeq not {
                                pop false
                            } if
                        } {
                            false
                        } ifelse
                    } {
                        false
                    } ifelse
                } forall
            } {
                false
            } ifelse
        } {
            a type dup /arraytype eq exch /stringtype eq or {
                a length b length eq {
                    true
                    0 1 a length 1 sub {
                        dup a exch get exch b exch get deepeq not {
                            pop false
                            exit
                        } if
                    } for
                } {
                    false
                } ifelse
            } {
                a b eq
            } ifelse
        } ifelse
    } {
        false
    } ifelse
    end
} bind def

% end included library code

/kronecker {
    12 dict begin
    /b exch def
    /a exch def
    /ax a 0 get length def
    /ay a length def
    /bx b 0 get length def
    /by b length def
    [
        0 1 ay by mul 1 sub {
            /y exch def
            /byi y by mod def
            /ayi y by idiv def
            [
                0 1 ax bx mul 1 sub {
                    /x exch def
                    /bxi x bx mod def
                    /axi x bx idiv def
                    a ayi get axi get b byi get bxi get mul
                } for
            ]
        } for
    ]
    end
} bind def

(kronecker) test.start
[ [1 2] [3 4] ] [ [5 6] [7 8] ] kronecker
[ [ 5   6  10  12] 
  [ 7   8  14  16] 
  [15  18  20  24] 
  [21  24  28  32] ] deepeq test
test.end