CPXdperwrite

int CPXPUBLIC CPXdperwrite(CPXCENVptr env, CPXLPptr lp, const char * filename_str, double epsilon)

Definition file: cplex.h

Include files: cplex.h

When solving degenerate linear programs with the dual simplex method, CPLEX may initiate a perturbation of the objective function of the problem in order to improve performance. The routine CPXdperwrite writes a similarly perturbed problem to a binary SAV format file.

Example

 status = CPXdperwrite (env, lp, "myprob.dpe", epsilon);

Parameters:

env	A pointer to the CPLEX environment as returned by `CPXopenCPLEX`.
lp	A pointer to a CPLEX problem object as returned by `CPXcreateprob`.
filename_str	A character string containing the name of the file to which the perturbed LP problem should be written.
epsilon	The perturbation constant.

Returns:

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