# BESSEL_Y1

Elemental Intrinsic Function (Generic): Computes a Bessel function of the second kind, order 1.

result = BESSEL_Y1 (x)

x | (Input) Must be of type real with a value greater than zero.

## Results

The result type and kind are the same as x.

The result has a value equal to a processor-dependent approximation to the Bessel function of the second kind and order 1 of x.

## Example

BESSEL_Y1 (1.0) has the approximate value -0.781.

Parent topic: A to B