epsilon-abs

(/odie/epsilon-abs)

This element allows control of the most straightforward kind of error in the simulation: how far the approximate solution differs from the real solution. But note that setting this number to, say, 1.0e-10 does not guarantee that your simulation results will be correct to 10 figures. The smaller that this number is, the harder the simulation will try to stay close to the actual solution in an absolute sense. On the other hand, when the values of a solution become very small, you use the "epsilon-rel" element to control how small the error is as a fraction of the solution; you control the relative error.

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