int gsl_sf_bessel_J0_e(double x,double* result);
double gsl_sf_bessel_J0(double x);
int gsl_sf_bessel_J1_e(double x,double* result);
double gsl_sf_bessel_J1(double x);
int gsl_sf_bessel_Jn_e(int n,double x,double* result);
double gsl_sf_bessel_Jn(int n,double x);
int gsl_sf_bessel_Jn_array(int nmin,int nmax,double x,double* result_array);
int gsl_sf_bessel_Y0_e(double x,double* result);
double gsl_sf_bessel_Y0(double x);
int gsl_sf_bessel_Y1_e(double x,double* result);
double gsl_sf_bessel_Y1(double x);
int gsl_sf_bessel_Yn_e(int n,double x,double* result);
double gsl_sf_bessel_Yn(int n,double x);
int gsl_sf_bessel_Yn_array(int nmin,int nmax,double x,double* result_array);
int gsl_sf_bessel_I0_e(double x,double* result);
double gsl_sf_bessel_I0(double x);
int gsl_sf_bessel_I1_e(double x,double* result);
double gsl_sf_bessel_I1(double x);
int gsl_sf_bessel_In_e(int n,double x,double* result);
double gsl_sf_bessel_In(int n,double x);
int gsl_sf_bessel_In_array(int nmin,int nmax,double x,double* result_array);
int gsl_sf_bessel_I0_scaled_e(double x,double* result);
double gsl_sf_bessel_I0_scaled(double x);
int gsl_sf_bessel_I1_scaled_e(double x,double* result);
double gsl_sf_bessel_I1_scaled(double x);
int gsl_sf_bessel_In_scaled_e(int n,double x,double* result);
double gsl_sf_bessel_In_scaled(int n,double x);
int gsl_sf_bessel_In_scaled_array(int nmin,int nmax,double x,double* result_array);
int gsl_sf_bessel_K0_e(double x,double* result);
double gsl_sf_bessel_K0(double x);
int gsl_sf_bessel_K1_e(double x,double* result);
double gsl_sf_bessel_K1(double x);
int gsl_sf_bessel_Kn_e(int n,double x,double* result);
double gsl_sf_bessel_Kn(int n,double x);
int gsl_sf_bessel_Kn_array(int nmin,int nmax,double x,double* result_array);
int gsl_sf_bessel_K0_scaled_e(double x,double* result);
double gsl_sf_bessel_K0_scaled(double x);
int gsl_sf_bessel_K1_scaled_e(double x,double* result);
double gsl_sf_bessel_K1_scaled(double x);
int gsl_sf_bessel_Kn_scaled_e(int n,double x,double* result);
double gsl_sf_bessel_Kn_scaled(int n,double x);
int gsl_sf_bessel_Kn_scaled_array(int nmin,int nmax,double x,double* result_array);
int gsl_sf_bessel_j0_e(double x,double* result);
double gsl_sf_bessel_j0(double x);
int gsl_sf_bessel_j1_e(double x,double* result);
double gsl_sf_bessel_j1(double x);
int gsl_sf_bessel_j2_e(double x,double* result);
double gsl_sf_bessel_j2(double x);
int gsl_sf_bessel_jl_e(int l,double x,double* result);
double gsl_sf_bessel_jl(int l,double x);
int gsl_sf_bessel_jl_array(int lmax,double x,double* result_array);
int gsl_sf_bessel_jl_steed_array(int lmax,double x,double* jl_x_array);
int gsl_sf_bessel_y0_e(double x,double* result);
double gsl_sf_bessel_y0(double x);
int gsl_sf_bessel_y1_e(double x,double* result);
double gsl_sf_bessel_y1(double x);
int gsl_sf_bessel_y2_e(double x,double* result);
double gsl_sf_bessel_y2(double x);
int gsl_sf_bessel_yl_e(int l,double x,double* result);
double gsl_sf_bessel_yl(int l,double x);
int gsl_sf_bessel_yl_array(int lmax,double x,double* result_array);
int gsl_sf_bessel_i0_scaled_e(double x,double* result);
double gsl_sf_bessel_i0_scaled(double x);
int gsl_sf_bessel_i1_scaled_e(double x,double* result);
double gsl_sf_bessel_i1_scaled(double x);
int gsl_sf_bessel_i2_scaled_e(double x,double* result);
double gsl_sf_bessel_i2_scaled(double x);
int gsl_sf_bessel_il_scaled_e(int l,double x,double* result);
double gsl_sf_bessel_il_scaled(int l,double x);
int gsl_sf_bessel_il_scaled_array(int lmax,double x,double* result_array);
int gsl_sf_bessel_k0_scaled_e(double x,double* result);
double gsl_sf_bessel_k0_scaled(double x);
int gsl_sf_bessel_k1_scaled_e(double x,double* result);
double gsl_sf_bessel_k1_scaled(double x);
int gsl_sf_bessel_k2_scaled_e(double x,double* result);
double gsl_sf_bessel_k2_scaled(double x);
int gsl_sf_bessel_kl_scaled_e(int l,double x,double* result);
double gsl_sf_bessel_kl_scaled(int l,double x);
int gsl_sf_bessel_kl_scaled_array(int lmax,double x,double* result_array);
int gsl_sf_bessel_Jnu_e(double nu,double x,double* result);
double gsl_sf_bessel_Jnu(double nu,double x);
int gsl_sf_bessel_Ynu_e(double nu,double x,double* result);
double gsl_sf_bessel_Ynu(double nu,double x);
int gsl_sf_bessel_Inu_scaled_e(double nu,double x,double* result);
double gsl_sf_bessel_Inu_scaled(double nu,double x);
int gsl_sf_bessel_Inu_e(double nu,double x,double* result);
double gsl_sf_bessel_Inu(double nu,double x);
int gsl_sf_bessel_Knu_scaled_e(double nu,double x,double* result);
double gsl_sf_bessel_Knu_scaled(double nu,double x);
int gsl_sf_bessel_Knu_e(double nu,double x,double* result);
double gsl_sf_bessel_Knu(double nu,double x);
int gsl_sf_bessel_lnKnu_e(double nu,double x,double* result);
double gsl_sf_bessel_lnKnu(double nu,double x);
int gsl_sf_bessel_zero_J0_e(int s,double* result);
double gsl_sf_bessel_zero_J0(int s);
int gsl_sf_bessel_zero_J1_e(int s,double* result);
double gsl_sf_bessel_zero_J1(int s);
int gsl_sf_bessel_zero_Jnu_e(double nu,int s,double* result);
double gsl_sf_bessel_zero_Jnu(double nu,int s);