IBM ILOG Solver User's Manual > More on Modeling > Using Constrained Floating-Point Variables: Modeling Equations

Using Constrained Floating-Point Variables: Modeling Equations

In this lesson, you will learn how to:

use constrained floating-point variables in expressions
use predefined functions such as IloExponent, IloPower, and IloLog
use the goals IloDichotomize and IloGenerateBounds
use arrays of constrained floating-point variables

Solver allows you to use constrained floating-point variables using the class IloNumVar. Instances of the class IloNumVar have a domain represented by an interval of floating-point real numbers. The bounds of the domain are not represented by integers but by doubles defined by C++. Consequently, computations with constrained floating-point variables occur in double precision.

Note

This chapter is not presented using the three-stage method, as in previous chapters in this part. This subject matter lends itself more naturally to a conceptual introduction rather than procedural-based learning. However, when confronted with a problem using constrained floating-point variables, you should still use the Describe, Model, and Solve stages.

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