CPXgetax

int CPXPUBLIC CPXgetax(CPXCENVptr env, CPXCLPptr lp, double * x, int begin, int end)

Definition file: cplex.h

Include files: cplex.h

The routine CPXgetax is used to access row activity levels for a range of constraints of a linear or quadratic program. The beginning and end of the range must be specified. A row activity is the inner product of a row in the constraint matrix and the structural variables in the problem.

The array must be of length at least (end-begin+1). If successful, x[0] through x[end-begin] contain the row activities.

Parameters:

env	A pointer to the CPLEX environment as returned by `CPXopenCPLEX`.
lp	A pointer to a CPLEX problem object as returned by `CPXcreateprob`.
x	An array to receive the values of the row activity levels for each of the constraints in the specified range. The array must be of length at least (`end-begin+1`). If successful, `x[0]` through `x[end-begin]` contain the row activities.
begin	An integer indicating the beginning of the range of row activities to be returned.
end	An integer indicating the end of the range of row activities to be returned.

Returns:

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