The functions besselj(nu,z), etc are not restricted to

integer values of nu or real values for z. Spherical bessel

functions are just bessel functions of 1/2 integer,

multiplied by a normalizing factor:

spherical bessel (n,z) = besselj(n+1/2,z)*sqrt(pi/(2*z))

The functions besselj(nu,z), etc are not restricted to

integer values of nu or real values for z. Spherical bessel

functions are just bessel functions of 1/2 integer,

multiplied by a normalizing factor:

spherical bessel (n,z) = besselj(n+1/2,z)*sqrt(pi/(2*z))

thank you so much

Bear in mind that they have a prefix, they're bessel functions of 1/2 integer with a prefix sqrt ( pi/2x).