Description
The routine CPXgetpi() is used to access the dual values for a range of the constraints of a linear or quadratic program. The beginning and end of the range must be specified.Return Value
The routine returns a zero on success, and a nonzero if an error occurs.Synopsis
int CPXgetpi (CPXENVptr env,
CPXLPptr lp,
double *pi,
int begin,
int end);
CPXENVptr envThe pointer to the CPLEX environment as returned by one of the
CPXopenCPLEX routines.
CPXLPptr lpA pointer to a CPLEX LP problem object as returned by
CPXcreateprob().
double *piAn array to receive the values of the dual variables for each of the constraints. This array must be of length at least (
end - begin + 1). If successful, pi[0] throughpi[end-begin] will contain the dual values.
int beginAn integer indicating the beginning of the range of dual values to be returned.
int endAn integer indicating the end of the range of dual values to be returned.
status = CPXgetpi (env, lp, pi, 0, CPXgetnumrows(env,lp)-1);