lambertw {condmixt}R Documentation

Lambert W Function

Description

The Lambert W function, given an input z, outputs w such that z = w exp(w). A numerical algorithm of order 4 is used to find the zero of z - w exp(w).

Usage

lambertw(z)

Arguments

z

the argument of the Lambert W function

Value

Returns the value of the Lambert W function.

Author(s)

Julie Carreau

References

Corless, R. M., Gonnet, G. H., Hare, D. E. G., Jeffrey, D. J. and Knuth, D. E. (1996), On the Lambert W Function, 5, Advances in Computational Mathematics


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