WE_1 WEi WEn WLi WSpence

WLi() Function WLi ( X As  Double ) Logarithmic integral li(x) Purpose WLi computes the logarithmic integral li(x). li(x) = ∫ 1/ln(t) dt [0, x] = Ei(ln(x)) Returns Logarithmic integral li(x). Parameters [in] X Argument x. (X >= 0) Reference boost/math/special_functions