nag_pi (X01AAC) (PDF version)
x01 Chapter Contents
x01 Chapter Introduction
NAG Library Manual

NAG Library Function Document

nag_pi (X01AAC)

▸▿ Contents

    1  Purpose
    2  Specification
    3  Description
    4  References
    5  Arguments
    6  Error Indicators and Warnings
    7  Accuracy
    8  Parallelism and Performance
    9  Further Comments
    10  Example

1
Purpose

nag_pi (X01AAC) returns the numerical value of π.

2
Specification

#include <nag.h>
#include <nagx01.h>
double  nag_pi

3
Description

nag_pi (X01AAC) is a constant defined in the C Header file.

4
References

None.

5
Arguments

None.

6
Error Indicators and Warnings

None.

7
Accuracy

The result should be correct to machine precision (see Chapter x02).

8
Parallelism and Performance

nag_pi (X01AAC) is not threaded in any implementation.

9
Further Comments

None.

10
Example

None.
nag_pi (X01AAC) (PDF version)
x01 Chapter Contents
x01 Chapter Introduction
NAG Library Manual
© The Numerical Algorithms Group Ltd, Oxford, UK. 2017