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GRBgetgenconstrPow

 int GRBgetgenconstrPow ( GRBmodel *model, int id, int *xvarP, int *yvarP, double *aP )

Retrieve the data associated with a general constraint of type POW. Calling this method for a general constraint of a different type leads to an error return code. You can query the GenConstrType attribute to determine the type of the general constraint.

See also GRBaddgenconstrPow for a description of the semantics of this general constraint type.

Return value:

A non-zero return value indicates that a problem occurred while retrieving the general constraint data. Refer to the Error Code table for a list of possible return values. Details on the error can be obtained by calling GRBgeterrormsg.

Arguments:

model: The model that contains the desired general constraint.

id: The index of the general constraint to retrieve.

Note that any of the following arguments can be NULL.

xvarP: The index of variable .

yvarP: The index of variable .

aP: The exponent of the function.

Example usage:

  int type;
int xvar;
int yvar;
double a;

error = GRBgetintattrelement(model, GRB_INT_ATTR_GENCONSTRTYPE, 3, &type);
if (type == GRB_GENCONSTR_POW) {
error = GRBgetgenconstrPow(model, 3, &xvar, &yvar, &a);
}