CPXXcheckchgcoeflist and CPXcheckchgcoeflist

Checks data when the list of coefficients in a model changes.

Signature


CPXCHECKLIBAPI
int CPXPUBLIC CPXXcheckchgcoeflist  (CPXCENVptr env, 
                                    CPXCLPptr lp, 
                                    CPXNNZ numcoefs,
                              const CPXDIM *rowlist, 
                              const CPXDIM *collist,
                              const double *vallist);


CPXCHECKLIBAPI
int CPXPUBLIC CPXcheckchgcoeflist  (CPXCENVptr env, 
                                    CPXCLPptr lp, 
                                    CPXNNZ numcoefs,
                              const CPXDIM *rowlist, 
                              const CPXDIM *collist,
                              const double *vallist);

Description

This routine validates the arguments of the corresponding routine CPXXchgcoeflist and CPXchgcoeflist. The source code of this data checking routine is in the file check.c, provided as part of the product.

To call this routine, you must compile and link check.c with your program as you compile and link with the CPLEX Callable Library.

Arguments

The arguments of this routine are the same as those of CPXXchgcoeflist and CPXchgcoeflist. The second argument, lp, is technically a pointer to a constant LP object of type CPXCLPptr rather than type CPXLPptr, because this routine does not modify the problem. For most user applications, this distinction is unimportant.

Name	Description
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`.
numcoefs	The number of coefficients to change, 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 change.
collist	An array of length `numcoefs` that with `rowlist` and `vallist` specifies the coefficients to change.
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 changed to the value `vallist[k]`.

Return

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

Example


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