X01AAF (PDF version)
X01 Chapter Contents
X01 Chapter Introduction
NAG Library Manual
NAG Library Routine Document
X01AAF
Note:
before using this routine, please read the Users' Note for your implementation to check the interpretation of
bold italicised
terms and other implementation-dependent details.
+
−
Contents
1
Purpose
2
Specification
3
Description
4
References
5
Parameters
6
Error Indicators and Warnings
7
Accuracy
8
Further Comments
9
Example
1 Purpose
X01AAF returns the numerical value of
π
.
2 Specification
FUNCTION X01AAF (
X
)
REAL (KIND=nag_wp) X01AAF
REAL (KIND=nag_wp)
X
3 Description
None.
4 References
None.
5 Parameters
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 Further Comments
None.
9 Example
None.
X01AAF (PDF version)
X01 Chapter Contents
X01 Chapter Introduction
NAG Library Manual
© The Numerical Algorithms Group Ltd, Oxford, UK. 2012