Normalization

5.2.10 Normalization

interval<T> normalized() const; 
interval<T>& normalize();

These functions normalize the interval, that is ensure that for an interval $A ∈IR$ it is guaranteed that $a≤ a-$ and that if any of the two is $∅$ so is the other.

normalized(): Returns a copy of the current interval object but in a normalized state.
normalize(): Normalizes the current interval object and returns a reference to it.

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