MathUtils.h: header functions should be replaced with definitions from half.h

In MathUtils.h there are some helper functions that provide hard coded numbers for some of the half data format numeric limits:

GetHalfMax, GetHalfMin, GetHalfNormMin

These should be replaced with definitions pulled from half.h

As they also appear to not be either unused or only used by MathUtils.cpp I would propose they be first removed/migrated into that translation unit and then replaced.

Inizia esaminando gli helper GetHalfMax, GetHalfMin e GetHalfNormMin in MathUtils.h, i loro utilizzi in MathUtils.cpp e le definizioni corrispondenti in half.h. Verifica che gli helper possano essere rimossi o spostati in MathUtils.cpp, quindi controlla che i limiti numerici provengano da half.h e che i test esistenti continuino a passare.

Scritto dal modello di indicizzazione a partire dal testo della issue.