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XPRBgetcoeff

XPRBgetcoeff

Purpose
Get the coefficient of a linear constraint term.
Synopsis
double XPRBgetcoeff(XPRBctr ctr, XPRBvar var);
Arguments
ctr 
BCL reference to a previously created constraint.
var 
BCL reference to a variable. May be NULL to indicate the constant term.
Return value
Coefficient of the variable in the specified constraint or 0 if the variable does not occur.
Example 
XPRBprob expl2;
XPRBctr ctr1;
XPRBvar x1;
double val;
   ...
expl2 = XPRBnewprob("example2");
x1 = XPRBnewvar(expl2, XPRB_UI, "abc3", 0, 100);
ctr1 = XPRBnewctr(expl2, "r1", XPRB_E);
XPRBaddterm(ctr1, x1, 5.4);
val = XPRBgetcoeff(ctr1, x1);
This retrieves the coefficient of the variable x1 in the constraint ctr1.
Further information
This function returns the coefficient of a given variable var in the constraint ctr. Return value 0 indicates that the variable is not contained in the constraint. If var is set to NULL, this function returns the right hand side (constant term) of the constraint.
Related topics
XPRBaddterm, XPRBgetqcoeff, XPRBgetrhs, XPRBnewctr, XPRBsetterm.

Parent Topic BCL C library functions

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