Fortran Wiki
bessel_yn

Description

bessel_yn(n, x) computes the Bessel function of the second kind of order n of x. If n and x are arrays, their ranks and shapes shall conform.

bessel_yn(n1, n2, x) returns an array with the Bessel functions of the first kind of the orders n1 to n2.

Standard

Fortran 2008 and later

Class

Elemental function, except for the transformational function bessel_yn(n1, n2, x)

Syntax

result = bessel_yn(n, x)
result = bessel_yn(n1, n2, x)

Arguments

n - Shall be a scalar or an array of type integer.
n1 - Shall be a non-negative scalar of type integer.
n2 - Shall be a non-negative scalar of type integer.
x - Shall be a scalar or an array of type real; for bessel_yn(n1, n2, x) it shall be scalar.

Return value

The return value is real. It has the same kind as x.

Example

program test_besyn
  real(8) :: x = 1.0_8
  x = bessel_yn(5,x)
end program test_besyn

Fortran Wiki bessel_yn