CPXobjsa

Description

The routine CPXobjsa() is used to access a range of upper and lower sensitivity ranges for objective function coefficients. The beginning and end of the range must be specified. Note that information for variable j, where begin

j

end, will be returned in position (j-begin) of the arrays lower and upper.

Return Value

The routine returns a zero on success, and a nonzero if an error occurs. This routine will fail if no optimal basis exists.

Synopsis

int CPXobjsa (CPXENVptr env
              CPXLPptr lp,
              int begin,
              int end,
              double *lower,
              double *upper);

Arguments


CPXENVptr env

The pointer to the CPLEX environment as returned by one of the CPXopenCPLEX routines.

CPXLPptr lp

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

int begin

An integer indicating the beginning of the range of ranges to be returned.

int end

An integer indicating the end of the range of ranges to be returned.

double *lower

An array where the objective function lower range values are to be returned. This array must be of length at least (end - begin + 1).

double *upper

An array where the objective function upper range values are to be returned. This array must be of length at least (end - begin + 1).

Example

status = CPXobjsa (env, lp, 0, CPXgetnumcols(env,lp)-1,
                   lower, upper);