#
Fortran Wiki

bessel_j0

## Description

`bessel_j0(x)`

computes the Bessel function of the first kind of order 0 of `x`

.

## Standard

Fortran 2008 and later

## Class

Elemental function

## Syntax

`result = bessel_j0(x)`

## Arguments

`x`

- The type shall be `real`

, and it shall be scalar.

## Return value

The return value is of type `real`

and lies in the range $-0.4027...\le \mathrm{Bessel}(0,x)\le 1$. It has the same kind as `x`

.

## Example

```
program test_besj0
real(8) :: x = 0.0_8
x = bessel_j0(x)
end program test_besj0
```

Revised on April 30, 2009 20:35:37
by

Jason Blevins
(71.70.142.190)
(607 characters / 0.0 pages)