Files
mercury/tests/hard_coded/quantifier2.m
Julien Fischer 1f6d83692a Update programming style in tests/hard_coded.
tests/hard_coded/*.m:
    Update programming style, unless doing so would change
    the meaning of the test, in particular:

    - use '.' as a module qualifier in place of '__'
    - use {write,print}_line where appropriate
    - use if-then-else in place of C -> T ; E
    - use state variables in place of DCGs

tests/hard_coded/dir_test.m:
    Document what the expected outputs correspond to.

    Use a uniform module qualifier in the output.

tests/hard_coded/dir_test.exp*:
    Conform to the above change.
2021-01-07 13:58:12 +11:00

41 lines
889 B
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
:- module quantifier2.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module list.
:- import_module int.
:- pred testsum(list(int), int, int).
:- mode testsum(in, in, out) is semidet.
testsum([], I, 0) :-
I > 0.
testsum([X | L], I, X + N1) :-
testsum(L, I, N1).
:- pred foo(pred(int, int)).
:- mode foo(free >> (pred(in, out) is semidet)) is det.
foo(testsum([1, 2, 3])).
main(!IO) :-
( if
P = (pred(I :: in, X :: out) is semidet :- I > 0, X = 6),
foo(Q),
J = 1,
( call(P, J, _X) <=> call(Q, J, _Y) )
then
io.print_line("yes", !IO)
else
io.print_line("no", !IO)
).