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XPRSsetcbbarlog

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Purpose

Declares a barrier log callback function, called at each iteration during the interior point algorithm.

Synopsis

int XPRS_CC XPRSsetcbbarlog (XPRSprob prob, int (XPRS_CC *fubl)(XPRSprob my_prob, void *my_object), void *object);

Arguments

prob	The current problem.
fubl	The callback function itself. This takes two arguments, my_prob and my_object, and has an integer return value. If the value returned by fubl is nonzero, the solution process will be interrupted. This function is called at every barrier iteration.
my_prob	The problem passed to the callback function, fubl.
my_object	The user-defined object passed as object when setting up the callback with XPRSsetcbbarlog.
object	A user-defined object to be passed to the callback function, fubl.

Example

This simple example prints a line to the screen for each iteration of the algorithm.

XPRSsetcbbarlog(prob,barLog,NULL);
XPRSmaxim(prob,"b");

The callback function might resemble:

int XPRS_CC barLog(XPRSprob prob, void *object)
{
  printf("Next barrier iteration\n");
}

Further information

If the callback function returns a nonzero value, the Optimizer run will be interrupted.

Related topics

XPRSsetcbgloballog, XPRSsetcblplog, XPRSsetcbmessage.

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