Syntax Running without an output

Emara — Thu, 10 Oct 2013 16:59:29 GMT

Dear all.,

The attached syntax is running and running , but it gave no output or even errors.

Could you help me with this problem?

Re: Syntax Running without an output

Rick_SAS — Thu, 10 Oct 2013 17:58:32 GMT

You have an infinite loop. There is no reason to expect the DO UNTIL loop to ever terminate.

In fact, if you let it run for 10,000 iterations, you get a plot that looks like the one I've attached. For these iterations |z| is usually in [-0.5, 0.5].

A good programming practice is to put a maximum number of iterations on the DO/UNTIL loop, like this:

do rl = 1 to 10000 until(zz>h|zz<-h);

...

end;

That way, you never have an infinite loop.

topic Syntax Running without an output in SAS/IML Software and Matrix Computations

Syntax Running without an output

Re: Syntax Running without an output