Ei_3(x)

Function: double gsl_sf_expint_3 (double x)

Function: int gsl_sf_expint_3_e (double x, gsl_sf_result * result)

These routines compute the exponential integral @math{Ei_3(x) = \int_0^x dt \exp(-t^3)} for @c{$x \ge 0$} @math{x >= 0}.