Ada Programming/Libraries/System.Address To Access Conversions

is a unit of the Predefined Language Environment since Ada 95.

Specification
Object Preelaborate Address_To_Access_Conversions Object_Pointer   Object To_Pointer Value Address  Object_Pointer To_Address Value Object_Pointer  Address Convention Intrinsic To_Pointer Convention Intrinsic To_Address SystemAddress_To_Access_Conversions

Wikibook

 * Ada Programming/Libraries/System