Closing the program

The XSLPdestroyprob function frees any system resources allocated by Xpress NonLinear for the specific problem. The problem pointer is then no longer valid. XPRSdestroyprob performs a similar function for the underlying linear problem mprob. The XSLPfree function frees any system resources allocated by Xpress NonLinear. You must then call XPRSfree to perform a similar operation for the optimizer.

  XSLPdestroyprob(sprob);
  XPRSdestroyprob(mprob);
  XSLPfree();
  XPRSfree();

If these functions are not called, the program may appear to have worked and terminated correctly. However, in such a case there may be areas of memory which are not returned to the system when the program terminates and so repeated executions of the program will result in progressive loss of available memory to the system, which will manifest iself in poorer performance and could ultimately produce a system crash.