nag_licence_query (a00acc) (PDF version)
a00 Chapter Contents
a00 Chapter Introduction
NAG C Library Manual

NAG Library Function Document

nag_licence_query (a00acc)

+ Contents

    1  Purpose
    7  Accuracy

1  Purpose

nag_licence_query (a00acc) provides a convenient means of checking the availability of a valid licence key on licence-managed implementations before starting computations that will use NAG C Library functions. In particular, the use of this function is highly recommended in programs that call NAG C Library functions 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

#include <nag.h>
#include <naga00.h>
Nag_Boolean  nag_licence_query ()

3  Description

nag_licence_query (a00acc) returns the logical value Nag_TRUE if a valid licence is found, otherwise Nag_FALSE is returned.
On non licence-managed implementations, Nag_TRUE is always returned.

4  References

None.

5  Arguments

None.

6  Error Indicators and Warnings

None.

7  Accuracy

Not applicable.

8  Further Comments

None.

9  Example

This example prints an appropriate message depending upon the value returned by nag_licence_query (a00acc).

9.1  Program Text

Program Text (a00acce.c)

9.2  Program Data

None.

9.3  Program Results

Program Results (a00acce.r)


nag_licence_query (a00acc) (PDF version)
a00 Chapter Contents
a00 Chapter Introduction
NAG C Library Manual

© The Numerical Algorithms Group Ltd, Oxford, UK. 2012