I'm measuring the integral of a quantity which, mathematically, requires the computation of a dilogarithm function.


where $b$ and $a$ (are real and) can be positive or negative. Dilogarithm has very nice properties that enable us to compute its value efficiently, For $|z|<1$, the following series converges absolutely:


I'm wondering is there any explicit way to compute or numerically approximate dilogarithm -- especially in COMSOL?


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