7.20 BESJN — Bessel function of the first kind

Description:

BESJN(N, X) computes the Bessel function of the first kind of order N of X.

Option:

gnu

Class:

elemental function

Syntax:

Y = BESJN(N, X)

Arguments:

N	The type shall be INTEGER(*), and it shall be scalar.
X	The type shall be REAL(*), and it shall be scalar.

Return value:

The return value is a scalar of type REAL(*).

Example:

          program test_besjn
            real(8) :: x = 1.0_8
            x = besjn(5,x)
          end program test_besjn
     

Specific names:

Name	Argument	Return type	Option
DBESJN(X)	INTEGER(*) N	REAL(8)	gnu
	REAL(8) X