Summation based benchmark for calculators

[toml_12953]

I find it interesting that this runs in 0.748 sec on a G2 Prime (N=10000)

Code:

EXPORT RunTest(N)
BEGIN
Σ(3 NTHROOT (e^(SIN(ATAN(X)))),X,1,N);
END;

but this:

Code:

EXPORT RunTest(N)
BEGIN
Σ(3 NTHROOT e^(SIN(ATAN(X))),X,1,N);
END;

runs in 0.93 seconds. The extra parentheses help.