CPXcopypartialbase

The routine CPXcopypartialbase is used to copy a partial basis into an LP problem object. Basis statuses do not need to be specified for every variable or slack/surplus/artificial variable. If the status of a variable is not specified, it is made nonbasic at its lower bound if the lower bound is finite; otherwise, it is made nonbasic at its upper bound if the upper bound is finite; otherwise, it is made nonbasic at 0.0. If the status of a slack/surplus/artificial variable is not specified, it is made basic.

Table 1: Values of cstat[i]
`CPX_AT_LOWER`	`0`	variable at lower bound
`CPX_BASIC`	`1`	variable is basic
`CPX_AT_UPPER`	`2`	variable at upper bound
`CPX_FREE_SUPER`	`3`	variable free and nonbasic

Table 2: Status of rows other than ranged rows in rstat[i]
`CPX_AT_LOWER`	`0`	associated slack variable nonbasic at value 0.0
`CPX_BASIC`	`1`	associated slack/surplus/artificial variable basic

Table 3: Status of ranged rows in rstat[i]
`CPX_AT_LOWER`	`0`	associated slack variable nonbasic at its lower bound
`CPX_BASIC`	`1`	associated slack variable basic
`CPX_AT_UPPER`	`2`	associated slack variable nonbasic at its upper bound

Example

 status = CPXcopypartialbase (env, lp, ccnt, colind, colstat,
                              rcnt, rowind, rowstat);

A pointer to the CPLEX environment, as returned by CPXopenCPLEX.

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

An integer that indicates the number of variable/column statuses specified, and is the length of the cindices and cstat arrays.

An array of length ccnt that contains the indices of the variables for which statuses are being specified.

An array of length ccnt where the ith entry contains the status for variable cindices[i].

An integer that indicates the number of slack/surplus/artificial statuses specified, and is the length of the rindices and rstat arrays.

An array of length rcnt that contains the indices of the slack/surplus/artificials for which statuses are being specified.

An array of length rcnt where the ith entry contains the status for slack/surplus/artificial rindices[i]. For rows other than ranged rows, the array element rstat[i] has the meaning summarized in Table 2. For ranged rows, the array element rstat[i] has the meaning summarized in Table 3.

This routine returns zero on success and nonzero if an error occurs.

CPXcopypartialbase

Parameters:

Returns:

env	A pointer to the CPLEX environment, as returned by `CPXopenCPLEX`.
lp	A pointer to a CPLEX LP problem object, as returned by `CPXcreateprob`.
ccnt	An integer that indicates the number of variable/column statuses specified, and is the length of the `cindices` and `cstat` arrays.
cindices	An array of length `ccnt` that contains the indices of the variables for which statuses are being specified.
cstat	An array of length `ccnt` where the ith entry contains the status for variable `cindices[i]`.
rcnt	An integer that indicates the number of slack/surplus/artificial statuses specified, and is the length of the `rindices` and `rstat` arrays.
rindices	An array of length `rcnt` that contains the indices of the slack/surplus/artificials for which statuses are being specified.
rstat	An array of length `rcnt` where the ith entry contains the status for slack/surplus/artificial `rindices[i]`. For rows other than ranged rows, the array element rstat[i] has the meaning summarized in Table 2. For ranged rows, the array element rstat[i] has the meaning summarized in Table 3.