Module rgsl::clausen

The Clausen function is defined by the following integral,

Cl_2(x) = - \int_0^x dt \log(2 \sin(t/2))

It is related to the dilogarithm by Cl_2(\theta) = \Im Li_2(\exp(i\theta)).

Functions

clausen	This routine computes the Clausen integral Cl_2(x).
clausen_e	This routine computes the Clausen integral Cl_2(x).