ILOG CPLEX 11.0 User's Manual > Languages and APIs > ILOG CPLEX Callable Library > ILOG CPLEX Programming Practices > Parameter Routines

You can set many parameters in the ILOG CPLEX environment to control its operation. The values of these parameters may be integer, double, or character strings, so there are sets of routines for accessing and setting them.

Table 4.2 Callable Library Routines for Parameters in the ILOG CPLEX Environment
Type 
Change value 
Access current value 
Access default, max, min 
integer 
double 
string 
Table 4.2 shows you the names and purpose of these routines. Each of these routines accepts the same first argument: a pointer to the ILOG CPLEX environment (that is, the pointer returned by CPXopenCPLEX). The second argument of each of those parameter routines is the parameter number, a symbolic constant defined in the header file, cplex.h. Managing Parameters from the Callable Library offers more details about parameter settings.