B-Prolog 4.0

Version of implementation B-Prolog of programming language Prolog

A version of B-Prolog, released in November 1999.


  • Slight speed-up
  • Hybrid propagation algorithm for FD constraints
  • Interface with C and Java improved
  • New built-ins: susp_var/1, chdir/1, set_prolog_flag/2, current_prolog_flag/2, once/1
  • read_term/2 is ISO-compliant
  • Warning messages are more friendly
  • Bug fix in tabling