XSLPsetcbiterend
XSLPsetcbiterend |
Purpose
Set a user callback to be called at the end of each SLP iteration
Synopsis
int XPRS_CC XSLPsetcbiterend(XSLPprob Prob, int (XPRS_CC *UserFunc) (XSLPprob myProb, void *myObject), void *Object);
Arguments
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Prob
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The current SLP problem.
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UserFunc
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The function to be called at the end of each SLP iteration.
UserFunc returns an integer value. If the return value is nonzero, the SLP iterations will stop.
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myProb
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The problem passed to the callback function.
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myObject
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The user-defined object passed as
Object to
XSLPsetcbiterend.
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Object
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Address of a user-defined object, which can be used for any purpose by the function.
Object is passed to
UserFunc as
myObject.
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Example
The following example sets up a callback to be executed at the end of each SLP iteration. It records the number of LP iterations in the latest optimization and stops if there were fewer than 10:
XSLPsetcbiterend(Prob, CBIterEnd, NULL);
A suitable callback function might resemble this:
int XPRS_CC CBIterEnd(XSLPprob MyProb, void *Obj) {
int nIter;
XPRSprob xprob;
XSLPgetptrattrib(MyProb, XSLP_XPRSPROBLEM, &xprob);
XSLPgetintattrib(xprob, XPRS_SIMPLEXITER, &nIter);
if (nIter < 10) return 1;
return 0;
}
The
Object argument is not used here, and so is passed as
NULL.
Further information
This callback can be used at the end of each SLP iteration to carry out any further processing and/or stop any further SLP iterations.
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