Tests Bitprop

Jan Burse, created Apr 15. 2020
/**
* Prolog code for the bit properties test casess.
*
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:- use_package(library(jekdev/reference/testing)).
:- multifile runner:ref/4.
:- discontiguous runner:ref/4.
:- multifile runner:case/4.
:- discontiguous runner:case/4.
:- use_module(library(misc/bits)).
% setbit(X, Y)
runner:ref(setbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.4').
runner:case(setbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.4, XLOG 1') :-
X is setbit(77, 4), X == 93.
runner:case(setbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.4, XLOG 2') :-
X is setbit(-77, 3), X == -69.
runner:case(setbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.4, XLOG 3') :-
X is setbit(77*2^100, 104), X =:= 93*2^100.
runner:case(setbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.4, XLOG 4') :-
X is setbit(-77*2^100, 103), X =:= -69*2^100.
% clearbit(X, Y)
runner:ref(clearbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.5').
runner:case(clearbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.5, XLOG 1') :-
X is clearbit(77, 3), X == 69.
runner:case(clearbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.5, XLOG 2') :-
X is clearbit(-77, 4), X == -93.
runner:case(clearbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.5, XLOG 3') :-
X is clearbit(77*2^100, 103), X =:= 69*2^100.
runner:case(clearbit, -3, misc_bitprop, 'CLP(FD) 0.9.2, 1.5, XLOG 4') :-
X is clearbit(-77*2^100, 104), X =:= -93*2^100.
% testbit(X, Y)
runner:ref(testbit, 2, misc_bitprop, 'CLP(FD) 0.9.2, 1.6').
runner:case(testbit, 2, misc_bitprop, 'CLP(FD) 0.9.2, 1.6, XLOG 1') :-
testbit(77, 3).
runner:case(testbit, 2, misc_bitprop, 'CLP(FD) 0.9.2, 1.6, XLOG 2') :-
\+ testbit(77, 4).
runner:case(testbit, 2, misc_bitprop, 'CLP(FD) 0.9.2, 1.6, XLOG 3') :-
X is -77*2^100, testbit(X, 104).
runner:case(testbit, 2, misc_bitprop, 'CLP(FD) 0.9.2, 1.6, XLOG 4') :-
X is -77*2^100, \+ testbit(X, 103).

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