CPXcheckchgcoeflist

The routine CPXcheckchgcoeflist validates the arguments of the corresponding CPXchgcoeflist routine. This data checking routine is found in source format in the file check.c which is provided with the standard CPLEX distribution. To call this routine, you must compile and link check.c with your program as well as the CPLEX Callable Library.

The CPXcheckchgcoeflist routine has the same argument list as the CPXchgcoeflist routine. The second argument, lp, is technically a pointer to a constant LP object of type CPXCLPptr rather than type CPXLPptr, as this routine will not modify the problem. For most user applications, this distinction is unimportant.

Example

 status = CPXcheckchgcoeflist (env, lp, numcoefs, rowlist,
                               collist, vallist);

A pointer to the CPLEX environment as returned by CPXopenCPLEX.

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

The number of coefficients to check, or, equivalently, the length of the arrays rowlist, collist, and vallist.

An array of length numcoefs that with collist and vallist specifies the coefficients to check.

An array of length numcoefs that with rowlist and vallist specifies the coefficients to check.

An array of length numcoefs that with rowlist and collist specifies the coefficients to change. The entries rowlist[k], collist[k], and vallist[k] specify that the matrix coefficient in row rowlist[k] and column collist[k] should be checked with respect to the value vallist[k].

The routine returns nonzero if it detects an error in the data; it returns zero if it does not detect any data errors.

CPXcheckchgcoeflist

Parameters:

Returns:

env	A pointer to the CPLEX environment as returned by `CPXopenCPLEX`.
lp	A pointer to a CPLEX problem object as returned by `CPXcreateprob`.
numcoefs	The number of coefficients to check, or, equivalently, the length of the arrays `rowlist`, `collist`, and `vallist`.
rowlist	An array of length `numcoefs` that with `collist` and `vallist` specifies the coefficients to check.
collist	An array of length `numcoefs` that with `rowlist` and `vallist` specifies the coefficients to check.
vallist	An array of length `numcoefs` that with `rowlist` and `collist` specifies the coefficients to change. The entries `rowlist[k]`, `collist[k]`, and `vallist[k]` specify that the matrix coefficient in row `rowlist[k]` and column `collist[k]` should be checked with respect to the value `vallist[k]`.