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Fix issue #67 #68

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merged 1 commit into from
Feb 21, 2024
Merged

Fix issue #67 #68

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6 changes: 3 additions & 3 deletions Csp/Integer/ConstrainedArray.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -69,10 +69,10 @@ private Bounds<int> EvaluateBounds(ExpressionInteger left, ExpressionInteger rig
{
var elements = Elements();

return new Bounds<int>(elements.Min(), elements.Max());
}
return new Bounds<int>(elements.DefaultIfEmpty().Min(), elements.DefaultIfEmpty().Max());
}

private ConstraintOperationResult Propagator(ExpressionInteger left, ExpressionInteger right, Bounds<int> enforce)
private ConstraintOperationResult Propagator(ExpressionInteger left, ExpressionInteger right, Bounds<int> enforce)
{
var result = ConstraintOperationResult.Undecided;

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2 changes: 1 addition & 1 deletion Csp/Integer/ConstraintInteger.cs
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Expand Up @@ -98,7 +98,7 @@ public void Propagate(out ConstraintOperationResult result)
do
{
Propagate(enforce, out result);
} while ((result &= ConstraintOperationResult.Propagated) == ConstraintOperationResult.Propagated);
} while ((result & ConstraintOperationResult.Propagated) == ConstraintOperationResult.Propagated);
}

public bool StateChanged()
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4 changes: 2 additions & 2 deletions Csp/Integer/ExpressionInteger.cs
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Expand Up @@ -501,7 +501,7 @@ public class ExpressionInteger : Expression<int>
return new Bounds<int>
(
leftBounds.UpperBound < rightBounds.LowerBound ? 1 : 0,
leftBounds.LowerBound < leftBounds.UpperBound ? 1 : 0
leftBounds.LowerBound <= leftBounds.UpperBound ? 1 : 0
);
},
propagator = (first, second, enforce) =>
Expand Down Expand Up @@ -571,7 +571,7 @@ public class ExpressionInteger : Expression<int>
return new Bounds<int>
(
leftBounds.LowerBound > rightBounds.UpperBound ? 1 : 0,
leftBounds.UpperBound > leftBounds.LowerBound ? 1 : 0
leftBounds.UpperBound >= leftBounds.LowerBound ? 1 : 0
);
},
propagator = (first, second, enforce) =>
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