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CPXslackfromx

int CPXPUBLIC CPXslackfromx(CPXCENVptr env, CPXCLPptr lp, const double * x, double * slack)
Definition file: cplex.h
Include files: cplex.h
Note

This is an advanced routine. Advanced routines typically demand a profound understanding of the algorithms used by ILOG CPLEX. Thus they incur a higher risk of incorrect behavior in your application, behavior that can be difficult to debug. Therefore, ILOG encourages you to consider carefully whether you can accomplish the same task by means of other Callable Library routines instead.

The routine CPXslackfromx computes an array of slack values from primal solution values.

Example

 status = CPXslackfromx (env, lp, x, slack);

Parameters:

env

A pointer to the CPLEX environment, as returned by CPXopenCPLEX.

lp

A pointer to a CPLEX LP problem object, as returned by CPXcreateprob.

x

An array that contains primal solution (x) values for the problem, as returned by routines such as CPXcrushx and CPXuncrushx. The array must be of length at least the number of columns in the LP problem object.

slack

An array to receive the slack values computed from the x values for the problem object. The array must be of length at least the number of rows in the LP problem object.

Returns:

The routine returns zero on success and nonzero if an error occurs.