Initializing help system before first use

XPRBnewsosw

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. (The generation of unique names will only take place if the names dictionary is enabled, see XPRBsetdictionarysize.)
Note:
all members that are added to a SOS must belong to the same problem as the SOS itself.

Related topics
XPRBdelsos, XPRBgetsosname, XPRBnewsos, XPRBnewsosrc, XPRBsetdictionarysize.

Parent Topic BCL C library functions

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