CHIP (programming language)

CHIP (Constraint Handling in Prolog) is a constraint logic programming language developed by M. Dincbas, Pascal Van Hentenryck and colleagues in 1985 at the European Computer-Industry Research Centre (ECRC), initially using a Prolog language interface.^[1] It was the first programming language to implement constraint programming over finite domains, ^[2][3] and subsequently to introduce the concept of global constraints.^[4]

CHIP V5 is the version developed and marketed by COSYTEC in Paris since 1993 with Prolog, using C, C++, or Prolog language interfaces.^[5] The commercially successful ILOG CPLEX solver is also, partly, an offshoot of the ECRC version of CHIP.