Chapter 4. Implementation-Defined Library Packages

In XGC Ada, many of the Ada 95 predefined packages are unavailable. In most cases this is because the standard package uses some language feature that is the subject of a restriction. However some packages are only rejected for a trivial use of a restricted features, and can be simply modified to be useful to the XGC programmer. This appendix described the package that have been made available in this way, also with several others that are no taken from the Ada Language Reference Manual, but which are nevertheless important.

At the time of writing, predefined packages exist as follows. More packages are planned and these will be documented as necessary.

package XGC is
   pragma Pure (XGC);
end XGC;