CPXXNETgetdj and CPXNETgetdj

The routine CPXXNETgetdj/CPXNETgetdj is used to access reduced costs for a range of arcs of the network stored in a network problem object.

int CPXXNETgetdj( CPXCENVptr env, CPXCNETptr net, double * dj, CPXDIM begin, CPXDIM end )

int CPXNETgetdj( CPXCENVptr env, CPXCNETptr net, double * dj, int begin, int end )

Description

The routine CPXXNETgetdj/CPXNETgetdj is used to access reduced costs for a range of arcs of the network stored in a network problem object.

For this function to succeed, a solution must exist for the problem object. If the solution is not feasible (that is, the routine CPXXNETsolninfo/CPXNETsolninfo returns 0 (zero) in its argument pfeasind_p), the reduced costs are computed with respect to an objective function that penalizes infeasibilities.

Arguments

env: A pointer to the CPLEX environment as returned by CPXXopenCPLEX/CPXopenCPLEX.
net: A pointer to a CPLEX network problem object as returned by CPXXNETcreateprob/CPXNETcreateprob.
dj: Array in which to write requested reduced costs. If NULL is passed, no reduced cost values are returned. Otherwise, dj must point to an array of size at least (end-begin+1).
begin: Index of the first arc for which a reduced cost value is to be obtained.
end: Index of the last arc for which a reduced cost value is to be obtained.

Return

The routine returns 0 (zero) on success and nonzero if an error occurs.

Example


 status = CPXNETgetdj (env, net, dj, 10, 20);