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ecb5e4a9e6
tests/declarative_debugger/*.m:
tests/exceptions/*.m:
tests/general/*.m:
tests/grade_subdirs/*.m:
tests/purity/*.m:
tests/submodules/*.m:
tests/typeclasses/*.m:
Update programming style.
tests/declarative_debugger/*.inp:
Update line numbers in breakpoint commands.
tests/declarative_debugger/*.exp:
Update expected line numbers.
tests/exceptions/Mercury.options:
tests/general/Mercury.options:
Disable some warnings that are irrelevant to the test.
77 lines
1.2 KiB
Mathematica
77 lines
1.2 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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% Test the tracking of a subterm through an explicit supertree.
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:- module explicit_subtree.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is det.
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:- implementation.
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:- import_module exception.
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:- import_module int.
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main(!IO) :-
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p1(10, Q),
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io.write_int(Q, !IO),
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io.nl(!IO).
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:- pred p1(int::in, int::out) is det.
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p1(X, Y) :-
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p2(X, Y).
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:- pred p2(int::in, int::out) is det.
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p2(X, Y) :-
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p3(X, Y).
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:- pred p3(int::in, int::out) is det.
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p3(X, Y) :-
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calc(X, Y).
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:- pred calc(int::in, int::out) is det.
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calc(X, Y) :-
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( if X > 0 then
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a(Z)
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else
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b(Z)
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),
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divide2(X, Z, Y).
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:- pred divide2(int::in, int::in, int::out) is det.
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divide2(N, D, Q) :-
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( if D = 0 then
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throw("zero denominator")
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else
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Q = N // D
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).
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:- pred b(int::out) is det.
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b(-1).
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:- pred a(int::out) is det.
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a(X + Y - 100) :-
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q(49, 0, X),
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q(51, 0, Y).
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:- pred q(int::in, int::in, int::out) is det.
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q(A, B, C) :-
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( if A =< 0 then
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B = C
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else
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q(A - 1, B + 1, C)
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).
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