On 04/05/2018 12:21 PM, clipka wrote:

>      #declare MySeed = seed(4711);
>      #macro MyRand(Min,Max)
>        // compute stuff
>        #local Rand = rand(MySeed);
>        #local Result = Min + (Max-Min)*Rand;
>        // "return" the computed value
>        Result
>      #end
> 

I wrap the return value in parenthesis. The intent is a little clearer 
in the macro def and may avoid usage problems.

     // "return" the computed value
     (Result)

I know clipka, legally this is not required, because Result is a single 
number. But I tend to do

     #local V=<1,2,3>;
     // "return" the computed value
     (Result+V)

where it is morally (debuggingly?) required.

sven, this is because when you use it, think of the expansion.

     #local R = MyRand(low, high) * 2;

which without parens, is
     #local R = Result + V * 2

which of course evaluates as
     #local R = Result + (V * 2)

which is not at all what you want.  With the parens, you get
     #local R = (Result + V) * 2

which is the intent of your usage.

-- 
dik
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