Experimental Physics and
Industrial Control System

sum(100*(ix%2)[0,9])+sum(-100*(!(ix%2))[0,9])

where, for example
    ix is (0,1,2,3,...)
    ix%2 is (0,1,0,1,...)
    ix[0,9] is (0,1,2,3,4,5,6,7,8,9,0,0,0,...)

If you're really desperate for an explicit loop, the acalcout and scalcout records have the "until" function:

    a:=0;b:=0;k:=until(a:=a+1.3;b:=b+1;b>=9);a

which is arcane, and difficult, and merely implements this:
    a=0;
    for (b=0; b<10; b+=1) {
        a += 1.3;
    }

If you want to process records in a loop, on the other hand, I second Bob's advice, and note that the calcout record has more help for conditionally executing a link.  Finally, the sscan record does loops, and I've used it with calc records to make 2D arrays of sample data.

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