Version 2.1 Release Notes

In addition to several bugfixes, the 2.1 versions provide some new features:

setarg/3 A new predicate setarg/3 for extra-logical (destructiveZ) assignment to arguments of terms is provided. Modified keysort/2 keysort/2 is now stable with regard to multiple values on the same key. Makes this predicate compatible with SICStus and Quintus. Modified grammar rule expansion DCG translation of free variables now calls phrase/3, which has been changed slightly to deal with `un-parsing'. Modification is probably not complete, but it fixes some problems encountered by Michael Böhlen. Exception handling The top of the runtime stack are automatically dumped on floating point exceptions. Foreign interface Added facilities to allow for embedding SWI-Prolog in C applications.