/**
         
 * Warranty & Liability
         
 * To the extent permitted by applicable law and unless explicitly
         
 * otherwise agreed upon, XLOG Technologies AG makes no warranties
         
 * regarding the provided information. XLOG Technologies AG assumes
         
 * no liability that any problems might be solved with the information
         
 * provided by XLOG Technologies AG.
         
 *
         
 * Rights & License
         
 * All industrial property rights regarding the information - copyright
         
 * and patent rights in particular - are the sole property of XLOG
         
 * Technologies AG. If the company was not the originator of some
         
 * excerpts, XLOG Technologies AG has at least obtained the right to
         
 * reproduce, change and translate the information.
         
 *
         
 * Reproduction is restricted to the whole unaltered document. Reproduction
         
 * of the information is only allowed for non-commercial uses. Selling,
         
 * giving away or letting of the execution of the library is prohibited.
         
 * The library can be distributed as part of your applications and libraries
         
 * for execution provided this comment remains unchanged.
         
 *
         
 * Restrictions
         
 * Only to be distributed with programs that add significant and primary
         
 * functionality to the library. Not to be distributed with additional
         
 * software intended to replace any components of the library.
         
 *
         
 * Trademarks
         
 * Jekejeke is a registered trademark of XLOG Technologies AG.
         
 */
         

         
runner_file(calculate, lists, 'XLOG 1.3 lists').
         

         
/* last(X, Y) */
         

         
runner_pred(last,2, calculate, lists, 'XLOG 1.3.1').
         
runner_case(last,2, calculate, lists, 'XLOG 1.3.1, XLOG 1') :-
         
   last([a,b,c], X),
         
   X == c.
         

         
/* last(X, Y, Z) */
         

         
runner_pred(last,3, calculate, lists, 'XLOG 1.3.2').
         
runner_case(last,3, calculate, lists, 'XLOG 1.3.2, XLOG 1') :-
         
    last([a,b,c], X, Y),
         
    X == c, Y == [a, b].
         
runner_case(last,3, calculate, lists, 'XLOG 1.3.2, XLOG 2') :-
         
    last(Y, c, [a,b]),
         
    Y = [a, b, c].
         

         
/* nth0(X, Y, Z) */
         

         
runner_pred(nth0,3, calculate, lists, 'XLOG 1.3.3').
         
runner_case(nth0,3, calculate, lists, 'XLOG 1.3.3, XLOG 1') :-
         
   nth0(1, [a,b,c], X),
         
   X == b.
         
runner_case(nth0,3, calculate, lists, 'XLOG 1.3.3, XLOG 2') :-
         
   nth0(K, [a,b,c], c),
         
   K == 2.
         

         
/* nth0(X, Y, Z, T) */
         

         
runner_pred(nth0,4, calculate, lists, 'XLOG 1.3.4').
         
runner_case(nth0,4, calculate, lists, 'XLOG 1.3.4, XLOG 1') :-
         
   nth0(0, [a,b,c], X, R),
         
   X == a, R == [b, c].
         
runner_case(nth0,4, calculate, lists, 'XLOG 1.3.4, XLOG 2') :-
         
   nth0(J, [a,b,c], b, R),
         
   J == 1, R == [a, c].
         

         
/* nth1(X, Y, Z) */
         

         
runner_pred(nth1,3, calculate, lists, 'XLOG 1.3.5').
         
runner_case(nth1,3, calculate, lists, 'XLOG 1.3.5, XLOG 1') :-
         
   nth1(1, [a,b,c], X),
         
   X == a.
         
runner_case(nth1,3, calculate, lists, 'XLOG 1.3.5, XLOG 2') :-
         
   nth1(K, [a,b,c], c),
         
   K == 3.
         

         
/* nth1(X, Y, Z, T) */
         

         
runner_pred(nth1,4, calculate, lists, 'XLOG 1.3.6').
         
runner_case(nth1,4, calculate, lists, 'XLOG 1.3.6, XLOG 1') :-
         
   nth1(1, [a,b,c], X, R),
         
   X == a, R == [b, c].
         
runner_case(nth1,4, calculate, lists, 'XLOG 1.3.6, XLOG 2') :-
         
   nth1(J, [a,b,c], b, R),
         
   J == 2, R == [a, c].