SWI-Prolog -- bb_inf/4

Documentation
- Reference manual
  - The SWI-Prolog library
    - library(clpqr): Constraint Logic Programming over Rationals and Reals
      - Solver predicates
        
        {}/1
        
        entailed/1
        
        inf/2
        
        sup/2
        
        minimize/1
        
        maximize/1
        
        bb_inf/5
        
        bb_inf/4
        
        bb_inf/3
        
        dump/3
- Packages

bb_inf(+Ints, +Expression, -Inf, -Vertex)

This predicate is offered in CLP(Q) only. It behaves the same as bb_inf/5 but does not use an error margin.