Use modern C++ casts instead of current C-style casting approaches

### Description

Update various API implementations that use c-style pointer casting and other c-style approaches to use modern C++ casts.

### Is this a breaking change?

The function signatures would remain unchanged
The behavior of the functions would be identical
User code that calls these functions wouldn't need any modifications

### Additional information

Modernizes the code base. Compilers will optimize these the same, but coding standards favor using C++ cast in C++ code.

Inizia individuando le implementazioni dell'API che utilizzano C-style pointer casts o altri C-style casting approaches. Sostituisci i casts pertinenti con modern C++ casts, preservando le function signatures e il comportamento, quindi verifica che le implementazioni continuino a compilarsi e a comportarsi in modo identico.

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