NAG Library Routine Document

a00acf  (licence)

 Contents

    1  Purpose
    7  Accuracy

1
Purpose

a00acf provides a convenient means of checking the availability of a valid licence key on licence-managed implementations before starting computations that will use NAG Library routines. In particular, the use of this function is highly recommended in programs that call NAG Library routines within multithreaded sections (e.g., OpenMP parallel regions). The function need only be called once, before the start of the first multithreaded section.

2
Specification

Fortran Interface
Function a00acf ( )
Logical:: a00acf
C Header Interface
#include nagmk26.h
Nag_Boolean  a00acf_ ()

3
Description

a00acf returns the logical value .TRUE. if a valid licence is found, otherwise .FALSE. is returned.
On non licence-managed implementations, .TRUE. is always returned.

4
References

None.

5
Arguments

None.

6
Error Indicators and Warnings

None.

7
Accuracy

Not applicable.

8
Parallelism and Performance

Not applicable.

9
Further Comments

None.

10
Example

This example prints an appropriate message depending upon the value returned by a00acf.

10.1
Program Text

Program Text (a00acfe.f90)

10.2
Program Data

None.

10.3
Program Results

Program Results (a00acfe.r)

© The Numerical Algorithms Group Ltd, Oxford, UK. 2017