Having Fun with Lambert W(x) Function

Darko Veberic

Publication date: 8 March 2010

Abstract: This short note presents the Lambert W(x) function and its possible application in the framework of physics related to the Pierre Auger Observatory. The actual numerical implementation in C++ consists of Halley's and Fritsch's iteration with branch-point expansion, asymptotic series and rational fits as initial approximations.

Has companion code repository: https://github.com/DarkoVeberic/LambertW

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