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XPRBnewsosw

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Purpose

Create a SOS, using weights.

Synopsis

XPRBsos XPRBnewsosw(XPRBprob prob, const char *name, int type, XPRBarrvar av, double *weight);

Arguments

prob	Reference to a problem.
name	The set name.
type	The set type, which must be one of: XPRB_S1  Special Ordered Set of type 1; XPRB_S2  Special Ordered Set of type 2.
av	An array of variables.
weight	An array of weights. May be NULL if not required.

Return value

Reference to the new SOS if function executed successfully, NULL otherwise.

Example

The following creates an SOS of type 1, with the variables in array ty1 and weights, cr.

XPRBprob prob;
XPRBsos set1;
XPRBarrvar ty1;
double cr[] = {2.0, 13.0, 15.0, 6.0, 8.5};
   ...
ty1 = XPRBnewarrvar(prob, 5, XPRB_PL, "arry1", 0, 500);
set1 = XPRBnewsosw(prob, "sos1", XPRB_S1, ty1, cr);

Further information

This function can be used instead of a stepwise SOS definition using functions XPRBnewsos and XPRBaddsosarrel, that is if the variables and their weights are available in the form of two arrays. If no weights are defined, the reference values of the variables are set to 1. If the indicated name is already in use, BCL adds an index to it. If no name is given for the set, BCL generates a default name starting with SOS.

Related topics

XPRBdelsos, XPRBgetsosname, XPRBnewsos, XPRBnewsosrc.

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