About the user-defined Function in Hspice???

hapice user-defined function

I have read the 'user-defined' section in the star-hspice guide,but the example of
user-defined functon which is as follows seems not to work,I don't know why?
example from the hspice guide :f(a,b)=a+a*b

Does anyone know how to coustruct the function???
Help,3xs~~

.func hspice

Hi.
This function is about what? I have just examined the HSpice manual and I find out that if e.g. you wanna define a source voltage which has a voltage controlled by a nonLinear function of two other differential voltages (I have copied and pasted the exact words from manual):

For example, generate a voltage controlled source that gives the controlled
voltage, V(1,0), as:
V(1, 0) = 3 × V(3,2) + 4 × V(7,6)^2
To implement this function, use the following controlled source element
statement:
E1 1 0 POLY(2) 3 2 7 6 0 3 0 0 0 4
This specifies a controlled voltage source connected between nodes 1 and 0 that
is controlled by two differential voltages: the voltage difference between nodes
3 and 2 and the voltage difference between nodes 7 and 6, that is, FA=V(3,2) and
FB=V(7,6). The polynomial coefficients are P0=0, P1=3, P2=0, P3=0, P4=0,
and P5=4.

Regards,
EZT

hspice .func

Thanks for your telling,ezt.
But the user-defined function is the not the voltage controlled source you mentioned,it only performs the calculation using the given argument.
Such as:
f(a,b)=a*b;** "f" is the function name ,and "a,b" is argument.

Once I define the funciton ,I can use it in my netlist.
Such as:
R1 1 0 f(1,2) ***the f(1,2) will calcute the resistance value by the 1,2

I have known in the Pspice ,we can define function,like this:
.FUNC f(a,b) {a*b}

however,I don't know how to do in hspice???

Regards all~~