Loadable Function: z = gsl_sf_Ci (arg1)
Loadable Function: [z, err] = gsl_sf_Ci (…)

Computes the Cosine integral Ci(x) = -\int_x^\infty dt \cos(t)/t for x > 0.

err contains an estimate of the absolute error in the value z.

This function is from the GNU Scientific Library, see http://www.gnu.org/software/gsl/ for documentation.

Package: gsl