#
Fortran Wiki

bessel_j1

## Description

`bessel_j1(x)`

computes the Bessel function of the first kind of order 1 of `x`

.

## Standard

Fortran 2008 and later

## Class

Elemental function

## Syntax

`result = bessel_j1(x)`

## Arguments

`x`

- The type shall be `real`

.

## Return value

The return value is of type `real`

and lies in the range `- 0.5818... \\leq Bessel (0,x) \\leq 0.5818 `

. It has the same kind as `x`

.

## Example

```
program test_besj1
real(8) :: x = 1.0_8
x = bessel_j1(x)
end program test_besj1
```

## See also

bessel_j0, bessel_jn, bessel_y0, bessel_y1, bessel_yn

Revised on April 4, 2016 09:21:06
by

Jason Blevins
(173.88.47.127)
(755 characters / 0.0 pages)