1 @cindex transport functions
3 The transport functions @math{J(n,x)} are defined by the integral
5 @c{$J(n,x) := \int_0^x dt \, t^n e^t /(e^t - 1)^2$}
6 @math{J(n,x) := \int_0^x dt t^n e^t /(e^t - 1)^2}.
7 They are declared in the header file @file{gsl_sf_transport.h}.
9 @deftypefun double gsl_sf_transport_2 (double @var{x})
10 @deftypefunx int gsl_sf_transport_2_e (double @var{x}, gsl_sf_result * @var{result})
11 These routines compute the transport function @math{J(2,x)}.
12 @comment Exceptional Return Values: GSL_EDOM
16 @deftypefun double gsl_sf_transport_3 (double @var{x})
17 @deftypefunx int gsl_sf_transport_3_e (double @var{x}, gsl_sf_result * @var{result})
18 These routines compute the transport function @math{J(3,x)}.
19 @comment Exceptional Return Values: GSL_EDOM, GSL_EUNDRFLW
23 @deftypefun double gsl_sf_transport_4 (double @var{x})
24 @deftypefunx int gsl_sf_transport_4_e (double @var{x}, gsl_sf_result * @var{result})
25 These routines compute the transport function @math{J(4,x)}.
26 @comment Exceptional Return Values: GSL_EDOM, GSL_EUNDRFLW
30 @deftypefun double gsl_sf_transport_5 (double @var{x})
31 @deftypefunx int gsl_sf_transport_5_e (double @var{x}, gsl_sf_result * @var{result})
32 These routines compute the transport function @math{J(5,x)}.
33 @comment Exceptional Return Values: GSL_EDOM, GSL_EUNDRFLW