nag_max_sine_argument (X02AHC) (PDF version)
x02 Chapter Contents
x02 Chapter Introduction
NAG C Library Manual

NAG Library Function Document

nag_max_sine_argument (X02AHC)

+ Contents

    1  Purpose
    7  Accuracy
    9  Example

1  Purpose

nag_max_sine_argument (X02AHC) returns the largest positive argument for which the C compiler run-time library functions sin and cos return a result with some meaningful accuracy.

2  Specification

#include <nag.h>
#include <nagx02.h>
double  nag_max_sine_argument

3  Description

nag_max_sine_argument (X02AHC) is a constant defined in the C Header file.
The trigonometric functions sin and cos supplied in some compiler run-time libraries do not return accurate results when their argument is large. Often the related accuracy of a result gets progressively worse as the argument gets larger. nag_max_sine_argument (X02AHC) gives a value beyond which the compiler run-time library returns results with no relative accuracy at all. Note that some run-time libraries do return accurate results for all arguments to sin and cos.

4  References

None.

5  Arguments

None.

6  Error Indicators and Warnings

None.

7  Accuracy

None.

8  Further Comments

None.

9  Example

None.

nag_max_sine_argument (X02AHC) (PDF version)
x02 Chapter Contents
x02 Chapter Introduction
NAG C Library Manual

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