7.5 Bessel Functions

The routines described in this section compute the Cylindrical Bessel functions J_n(x), Y_n(x), Modified cylindrical Bessel functions I_n(x), K_n(x), Spherical Bessel functions j_l(x), y_l(x), and Modified Spherical Bessel functions i_l(x), k_l(x). For more information see Abramowitz & Stegun, Chapters 9 and 10. The Bessel functions are defined in the header file `gsl_sf_bessel.h'.

7.5.1 Regular Cylindrical Bessel Functions
7.5.2 Irregular Cylindrical Bessel Functions
7.5.3 Regular Modified Cylindrical Bessel Functions
7.5.4 Irregular Modified Cylindrical Bessel Functions
7.5.5 Regular Spherical Bessel Functions
7.5.6 Irregular Spherical Bessel Functions
7.5.7 Regular Modified Spherical Bessel Functions
7.5.8 Irregular Modified Spherical Bessel Functions
7.5.9 Regular Bessel Function - Fractional Order
7.5.10 Irregular Bessel Functions - Fractional Order
7.5.11 Regular Modified Bessel Functions - Fractional Order
7.5.12 Irregular Modified Bessel Functions - Fractional Order
7.5.13 Zeros of Regular Bessel Functions