CPXXgetqconstrinfeas and CPXgetqconstrinfeas
The routine CPXXgetqconstrinfeas/CPXgetqconstrinfeas computes the
infeasibility of a given solution for a range of quadratic
constraints.
int CPXXgetqconstrinfeas( CPXCENVptr env, CPXCLPptr lp, double const * x, double * infeasout, CPXDIM begin, CPXDIM end )
int CPXgetqconstrinfeas( CPXCENVptr env, CPXCLPptr lp, double const * x, double * infeasout, int begin, int end )
Description
The routine CPXXgetqconstrinfeas/CPXgetqconstrinfeas computes the
infeasibility of a given solution for a range of quadratic
constraints. The beginning and end of the range must be
specified. For each constraint, the infeasibility value returned is
0 (zero) if the constraint is satisfied. Otherwise, the infeasibility
value returned is the amount by which the righthand side of the
constraint must be changed to make the queried solution valid. It
is positive for a less-than-or-equal-to constraint and negative for a
greater-than-or-equal-to constraint.
Arguments
- env
-
A pointer to the CPLEX environment as returned by
CPXXopenCPLEX/CPXopenCPLEX. - lp
-
A pointer to a CPLEX problem object as returned by
CPXXcreateprob/CPXcreateprob. - x
- The solution whose infeasibility is to be computed. May be NULL in which case the resident solution is used.
- infeasout
-
An array to receive the infeasibility value for each of the quadratic constraints. This array must be of length at least (
end-begin+1). - begin
- An integer specifying the beginning of the range of quadratic constraints whose infeasibility is to be returned.
- end
- An integer specifying the end of the range of quadratic constraints whose infeasibility is to be returned.
Return
The routine returns 0 (zero) if successful and nonzero if an error occurs.Example
status = CPXgetqconstrinfeas (env, lp, NULL, infeasout, 0, CPXgetnumqconstrs(env,lp)-1);