mirror of
https://github.com/Mercury-Language/mercury.git
synced 2026-04-19 11:23:46 +00:00
83 lines
2.0 KiB
Mathematica
83 lines
2.0 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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:- module factt_non.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is cc_multi.
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:- implementation.
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:- import_module bool.
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:- import_module float.
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:- import_module int.
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:- import_module list.
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:- import_module maybe.
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:- import_module pair.
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:- import_module solutions.
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:- import_module string.
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:- pred example(int, float, string).
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:- mode example(in, in, in) is semidet.
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:- mode example(in, in, out) is nondet.
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:- mode example(in, out, out) is nondet.
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:- mode example(out, out, out) is multi.
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:- pragma fact_table(example/3, "factt_non_examples").
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main(!IO) :-
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test_in_in_in(Result1),
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test_in_in_out(Result2),
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test_in_out_out(Result3),
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test_out_out_out(Result4),
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io.print_line(Result1, !IO),
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io.print_line(Result2, !IO),
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io.print_line(Result3, !IO),
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io.print_line(Result4, !IO).
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:- pred test_in_in_in(pair(bool)::out) is det.
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test_in_in_in(Res1 - Res2) :-
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Res1 = ( if example(2, 2.0, "2.0") then yes else no ),
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Res2 = ( if example(42, 2.0, "foobar") then yes else no ).
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:- pred test_in_in_out(pair(maybe(string))::out) is cc_multi.
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test_in_in_out(Res1 - Res2) :-
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Res1 = ( if example(42, 3.0, S1) then yes(S1) else no ),
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Res2 = ( if example(42, 2.0, S2) then yes(S2) else no ).
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:- pred test_in_out_out(pair(maybe(string))::out) is cc_multi.
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test_in_out_out(Res1 - Res2) :-
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( if
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example(42, F1, S1),
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F1 > 10.0
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then
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Res1 = yes(S1)
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else
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Res1 = no
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),
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( if
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example(2, F2, S2),
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F2 > 10.0
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then
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Res2 = yes(S2)
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else
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Res2 = no
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).
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:- pred test_out_out_out(list(string)::out) is det.
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test_out_out_out(Res) :-
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Pred =
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( pred(S::out) is nondet :-
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example(N, F, S),
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( N > 10
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; F < 1.5
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)
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),
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solutions(Pred, Res).
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