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Asked by _Katka_ in Algorithms, C# Programming Language
Hi, I have a tricky question. I need an algorithm to calculate the inverse tangent (tan ^ -1) for a specific floating-point x (-inf < x < inf). It has to converge fast or at least there must be a mechanism to calculate it to a specific number of digits ?
I've tried many algorithms (Wiki, MathWorld) but don't feel constraint by any of them (I probably got them wrong).. the priority is a functional one.. You can use almost any approach but try to avoid complex numbers, other inverse functions (I intend to use ArcTan to calculate the others).
So the priorities are:
1) functioning algorithm (customizable digit precision)
2) fast algorithm
3) less complex algorithm to implement or one using less special constants and operations (Bernoulli numbers or other specialities)
thanks in advance and best regards,
Kate
20091021-EE-VQP-81 / EE_QW_EXPERT_20070906