The Packages Characters, Wide_Characters, and Wide_Wide_Characters
Author: JTC1/SC22/WG9/ARG, by Randall Brukardt, ARG Editor

Ada Reference Manual — Legal Information

# A.3.1 The Packages Characters, Wide_Characters, and Wide_Wide_Characters

#### Static Semantics

1
The library package Characters has the following declaration:
2
package Ada.Characters is
pragma Pure(Characters);
end Ada.Characters;
3/2
The library package Wide_Characters has the following declaration:
4/2
package Ada.Wide_Characters is
pragma Pure(Wide_Characters);
end Ada.Wide_Characters;
5/2
The library package Wide_Wide_Characters has the following declaration:
6/2
package Ada.Wide_Wide_Characters is
pragma Pure(Wide_Wide_Characters);
end Ada.Wide_Wide_Characters;

#### Implementation Advice

7/3
If an implementation chooses to provide implementation-defined operations on Wide_Character or Wide_String (such as collating and sorting, etc.) it should do so by providing child units of Wide_Characters. Similarly if it chooses to provide implementation-defined operations on Wide_Wide_Character or Wide_Wide_String it should do so by providing child units of Wide_Wide_Characters.

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