XSB

XSB is the name of a dialect of the Prolog programming language and its implementation developed at Stony Brook University in collaboration with the Katholieke Universiteit Leuven, the New University of Lisbon, Uppsala University and software vendor XSB, Inc.

XSB extends Prolog with tabled resolution and HiLog (a standard extension of Prolog permitting limited higher-order logic programming).

The open source XSB implementation includes an interface to the Java programming language.

History

XSB was originally developed at Stony Brook University by David S. Warren, Terrance Swift, and Kostis Sagonas. It was based on the SB-Prolog language that was also developed at Stony Brook University in 1986. It is a logic programming language.

Syntax

XSB supports several standard programming language data types such as Integers, Floating Point numbers, and Atoms.

Integers in XSB can be interpreted in multiple bases. By default integers are interpreted in base 10 but can be interpreted in a range of bases from 2 to 36.