NAG CL Interface
s18cdc (bessel_​k1_​scaled)

1 Purpose

2 Specification

3 Description

4 References

5 Arguments

1: $\mathbf{x}$ – double Input

On entry: the argument $x$ of the function.

Constraint: $\mathbf{x}>0.0$.

2: $\mathbf{fail}$ – NagError * Input/Output

The NAG error argument (see Section 7 in the Introduction to the NAG Library CL Interface).

6 Error Indicators and Warnings

NE_ALLOC_FAIL

Dynamic memory allocation failed.
See Section 3.1.2 in the Introduction to the NAG Library CL Interface for further information.

NE_INTERNAL_ERROR

An internal error has occurred in this function. Check the function call and any array sizes. If the call is correct then please contact NAG for assistance.
See Section 7.5 in the Introduction to the NAG Library CL Interface for further information.

NE_NO_LICENCE

Your licence key may have expired or may not have been installed correctly.
See Section 8 in the Introduction to the NAG Library CL Interface for further information.

NE_REAL_ARG_LE

On entry, $\mathbf{x}=⟨\mathit{\text{value}}⟩$.
Constraint: $\mathbf{x}>0.0$.
$K_1$ is undefined and the function returns zero.

NE_REAL_ARG_TOO_SMALL

On entry, $\mathbf{x}=⟨\mathit{\text{value}}⟩$.
Constraint: $\mathbf{x}>⟨\mathit{\text{value}}⟩$.
The function returns the value of the function at the smallest permitted value of the argument.

7 Accuracy

8 Parallelism and Performance

9 Further Comments

10 Example

10.1 Program Text

10.2 Program Data

10.3 Program Results