NAG FL Interface
g08chf (gofstat_​anddar)

1 Purpose

2 Specification

3 Description

4 References

5 Arguments

1: $\mathbf{n}$ – Integer Input

On entry: $n$, the number of observations.

Constraint: $\mathbf{n}>1$.

2: $\mathbf{issort}$ – Logical Input

On entry: set $\mathbf{issort}=\mathrm{.TRUE.}$ if the observations are sorted in ascending order; otherwise the function will sort the observations.

3: $\mathbf{y}\left(\mathbf{n}\right)$ – Real (Kind=nag_wp) array Input/Output

On entry: $y_{\mathit{i}}$, for $\mathit{i}=1,2,\dots ,n$, the $n$ observations.

On exit: if $\mathbf{issort}=\mathrm{.FALSE.}$, the data sorted in ascending order; otherwise the array is unchanged.

Constraint: if $\mathbf{issort}=\mathrm{.TRUE.}$, the values must be sorted in ascending order. Each $y_i$ must lie in the interval $(0,1)$.

4: $\mathbf{ifail}$ – Integer Input/Output

On entry: ifail must be set to $0$, $\mathrm{-1}$ or $1$ to set behaviour on detection of an error; these values have no effect when no error is detected.

A value of $0$ causes the printing of an error message and program execution will be halted; otherwise program execution continues. A value of $\mathrm{-1}$ means that an error message is printed while a value of $1$ means that it is not.

If halting is not appropriate, the value $\mathrm{-1}$ or $1$ is recommended. If message printing is undesirable, then the value $1$ is recommended. Otherwise, the value $0$ is recommended. When the value $-\mathbf{1}$ or $\mathbf{1}$ is used it is essential to test the value of ifail on exit.

On exit: $\mathbf{ifail}=\mathbf{0}$ unless the routine detects an error or a warning has been flagged (see Section 6).

6 Error Indicators and Warnings

$\mathbf{ifail}=1$

On entry, $\mathbf{n}=⟨\mathit{\text{value}}⟩$.
Constraint: $\mathbf{n}>1$.

$\mathbf{ifail}=3$

$\mathbf{issort}=\mathrm{.TRUE.}$ and the data in y is not sorted in ascending order.

$\mathbf{ifail}=9$

The data in y must lie in the interval $(0,1)$.

$\mathbf{ifail}=-99$

An unexpected error has been triggered by this routine. Please contact NAG.

See Section 7 in the Introduction to the NAG Library FL Interface for further information.

$\mathbf{ifail}=-399$

Your licence key may have expired or may not have been installed correctly.

See Section 8 in the Introduction to the NAG Library FL Interface for further information.

$\mathbf{ifail}=-999$

Dynamic memory allocation failed.

See Section 9 in the Introduction to the NAG Library FL Interface for further information.

7 Accuracy

8 Parallelism and Performance

9 Further Comments

10 Example

10.1 Program Text

10.2 Program Data

10.3 Program Results