Meet ILOG CPLEX

ILOG CPLEX offers C, C++ and Java libraries that solve linear programming (LP) and related problems. Specifically, it solves linearly constrained optimization problems where the objective to be optimized can be expressed as a linear function or a convex quadratic function. The variables in the model may be declared as continuous or further constrained to take only integer values.

ILOG CPLEX comes in three forms to meet a wide range of users' needs:

The ILOG CPLEX Interactive Optimizer is an executable program that can read a problem interactively or from files in certain standard formats, solve the problem, and deliver the solution interactively or into text files. The program consists of the file cplex.exe on Windows platforms or cplex on UNIX platforms.
Concert Technology is a set of libraries offering an API that includes modeling facilities to allow the programmer to embed ILOG CPLEX optimizers in C++ and Java applications. The library is provided in files ilocplex.lib, concert.lib and cplex.jar on Windows platforms and in libilocplex.a, libconcert.a and cplex.jar on UNIX platforms, and makes use of the Callable Library (described next).
The ILOG CPLEX Callable Library is a C library that allows the programmer to embed ILOG CPLEX optimizers in applications written in C, Visual Basic, Fortran or any other language that can call C functions. The library is provided in files cplex81.lib and cplex81.dll on Windows platforms and in libcplex.a and libcplex81.so or libcplex81.sl on UNIX platforms.

In this manual, the phrase ILOG CPLEX Component Libraries is used when referring equally to any of these libraries. While all libraries are callable, the term ILOG CPLEX Callable Library as used here refers specifically to the C library.

This preface introduces ILOG CPLEX, version 8.1. It includes the following sections:

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