mirror of
https://github.com/Mercury-Language/mercury.git
synced 2026-04-23 13:23:47 +00:00
df6c23af61
tests/tabling/expand*.m:
Replace the use of the obsolete random number generator.
Delete some unused module imports.
104 lines
2.8 KiB
Mathematica
104 lines
2.8 KiB
Mathematica
%---------------------------------------------------------------------------%
|
|
% vim: ts=4 sw=4 et ft=mercury
|
|
%---------------------------------------------------------------------------%
|
|
%
|
|
% A test case to exercise the code for expanding hash tables,
|
|
% and for tabling typeinfos and tuples. We test the tabling of typeinfos
|
|
% for types of arity zero, one and two, and depths zero, one and two.
|
|
% The test is the same as expand_poly -- it needs to be done separately
|
|
% because if too many tests are run at once the program runs out of memory.
|
|
|
|
:- module expand_tuple.
|
|
|
|
:- interface.
|
|
|
|
:- import_module io.
|
|
|
|
:- pred main(io::di, io::uo) is det.
|
|
|
|
:- implementation.
|
|
|
|
:- import_module bool.
|
|
:- import_module int.
|
|
:- import_module list.
|
|
:- import_module random.
|
|
:- import_module random.sfc32.
|
|
:- import_module uint32.
|
|
|
|
:- pragma require_feature_set([memo]).
|
|
|
|
:- type record(T1, T2)
|
|
---> record(T1, T1, T2).
|
|
|
|
main(!IO) :-
|
|
sfc32.init(RNG, RS0),
|
|
random.shuffle_list(RNG, range(0, 1023), Perm, RS0, RS1),
|
|
choose_signs_and_enter(RNG, Perm, {}, Solns1, RS1, RS2),
|
|
( if test_tables(Solns1, yes) then
|
|
io.write_string("First test successful.\n", !IO)
|
|
else
|
|
io.write_string("First test unsuccessful.\n", !IO)
|
|
),
|
|
choose_signs_and_enter(RNG, Perm, {'a', [1, 2]}, Solns2, RS2, RS3),
|
|
( if test_tables(Solns2, yes) then
|
|
io.write_string("Second test successful.\n", !IO)
|
|
else
|
|
io.write_string("Second test unsuccessful.\n", !IO)
|
|
),
|
|
choose_signs_and_enter(RNG, Perm, {{'a', 'b'}, 3, 4}, Solns3, RS3, _),
|
|
( if test_tables(Solns3, yes) then
|
|
io.write_string("Third test successful.\n", !IO)
|
|
else
|
|
io.write_string("Third test unsuccessful.\n", !IO)
|
|
).
|
|
% io.report_tabling_stats(!IO).
|
|
|
|
:- func range(int, int) = list(int).
|
|
|
|
range(Min, Max) =
|
|
( if Min > Max then
|
|
[]
|
|
else
|
|
[Min | range(Min + 1, Max)]
|
|
).
|
|
|
|
:- pred choose_signs_and_enter(RNG::in, list(int)::in, T::in,
|
|
list(record(int, T))::out,
|
|
State::di, State::uo) is det <= urandom(RNG, State).
|
|
|
|
choose_signs_and_enter(_, [], _, [], !RS).
|
|
choose_signs_and_enter(RNG, [N | Ns], A, [record(F, S, A) | ISs], !RS) :-
|
|
random.generate_uint32(RNG, Random, !RS),
|
|
( if Random mod 2u32 = 0u32 then
|
|
F = N
|
|
else
|
|
F = 0 - N
|
|
),
|
|
sum(F, A, S),
|
|
choose_signs_and_enter(RNG, Ns, A, ISs, !RS).
|
|
|
|
:- pred test_tables(list(record(int, T))::in, bool::out) is det.
|
|
|
|
test_tables([], yes).
|
|
test_tables([record(I, S0, A) | Is], Correct) :-
|
|
sum(I, A, S1),
|
|
( if S0 = S1 then
|
|
test_tables(Is, Correct)
|
|
else
|
|
Correct = no
|
|
).
|
|
|
|
:- pred sum(int::in, T::in, int::out) is det.
|
|
:- pragma memo(sum/3).
|
|
|
|
sum(N, A, F) :-
|
|
( if N < 0 then
|
|
sum(0 - N, A, NF),
|
|
F = 0 - NF
|
|
else if N = 1 then
|
|
F = 1
|
|
else
|
|
sum(N - 1, A, F1),
|
|
F = N + F1
|
|
).
|