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fDesc[0] = "This calculator follows classical approach when uncertainty of f(x) calculation is estimated by formula max|(derivative(f))|*|x*uncertainty(x)|, where maximum of function derivative is considered on interval [x-uncertainty(x), x uncertainty(x)]. Thus sin(2*pi)=0 -1E-36 and sin(2*1E20*pi)=0 -1E-16. As we see, the result&rsquo;s accuracy degrades with growth of argument, but such approach allows to preserve all trigonometry facts like sin(even number*pi x)=sin(x). Calculators with multi-precision allows to calculate sin of big argument, like 1E40, with any precision, but cannot calculate sin(1E40*pi) since they don&rsquo;t have pi. The pi becomes for them a &ldquo;floating&rdquo; number with arbitrary precision. It seems strange, because 2*pi corresponds to one rotation and counting rotations is much easier then measuring 1E40 radians.<br /> In the default mixed mode the calculator treats numbers as integers wherever it is possible. For example, 38! have an integer result with 45 digits.<br /> There are 10 variables (or constants) available for storing frequently used numbers.";

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