NAG Library Routine Document

x01aaf  (pi)

 Contents

    1  Purpose
    7  Accuracy
    10  Example

1
Purpose

x01aaf returns the numerical value of π.

2
Specification

Fortran Interface
Function x01aaf ( x)
Real (Kind=nag_wp):: x01aaf
Real (Kind=nag_wp), Intent (In):: x
C Header Interface
#include nagmk26.h
double  x01aaf_ ( double *x)

3
Description

None.

4
References

None.

5
Arguments

1:     x – Real (Kind=nag_wp)Dummy

6
Error Indicators and Warnings

None.

7
Accuracy

The result should be correct to machine precision (see Chapter X02).

8
Parallelism and Performance

x01aaf is not threaded in any implementation.

9
Further Comments

None.

10
Example

None.
© The Numerical Algorithms Group Ltd, Oxford, UK. 2017