CPXboundsa

Description

The routine CPXboundsa() is used to access ranges for lower and/or upper bound values. The beginning and end of the range must be specified. Information for variable j, where begin j end, is returned in position (j-begin) of the arrays lblower, lbupper, ublower, and ubupper.

If only lower bound ranges are desired, then both lblower and lbupper should be non-NULL, and ublower and ubupper can be NULL. If only upper bound ranges are desired, then both ublower and ubupper should be non-NULL, and lblower and lbupper can be NULL.

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

int CPXboundsa (CPXCENVptr env, CPXCLPptr lp, int begin, int end, double *lblower, double *lbupper, double *ublower, double *ubupper);

Arguments

The pointer to the CPLEX environment as returned by CPXopenCPLEX().

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

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

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

An array where the lower bound lower range values are to be returned. The length of this array must be at least (end - begin + 1). May be NULL.

An array where the lower bound upper range values are to be returned. The length of this array must be at least (end - begin + 1). May be NULL.

An array where the upper bound lower range values are to be returned. The length of this array must be at least (end - begin + 1). May be NULL.

An array where the upper bound upper range values are to be returned. The length of this array must be at least (end - begin + 1). May be NULL.

status = CPXboundsa (env, lp, 0, CPXgetnumcols(env,lp)-1, lblower, lbupper, ublower, ubupper);