XPRBexprneg(XPRBexpr) Method

public static XPRBexpr neg(
	XPRBexpr l
)

Public Shared Function neg ( 
	l As XPRBexpr
) As XPRBexpr

XPRBprob prob = new XPRBprob("NewProb");
XPRBvar var = new XPRBvar("Variable");
XPRBexpr exp = new XPRBexpr(4.2*var + 3.6);
...
exp = XPRBexpr.neg(lexp);