NAG Library Manual, Mark 27
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NAG CL Interface Introduction
X02 (Machine) Chapter Contents
X02 (Machine) Chapter Introduction
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NAG CL Interface
X02ALC (real_​largest)

NAG Library Manual, Mark 27
Interfaces:  FL   CL   AD 
NAG CL Interface Introduction
X02 (Machine) Chapter Contents
X02 (Machine) Chapter Introduction
x02al:  FL   CL   AD 

▸▿ Contents

© The Numerical Algorithms Group Ltd. 2019

1 Purpose

X02ALC returns the largest positive floating-point number.

2 Specification

#include <nag.h>
double  X02ALC
The function may be called by the names: x02alc, nag_machine_real_largest or nag_real_largest_number.

3 Description

X02ALC is a constant defined in the C Header file.
X02ALC returns the largest positive number in the model of floating-point arithmetic described in the X02 Chapter Introduction. The returned value is equal to 1- b-p × bemax , where b is the arithmetic base (see X02BHC) and emax is the maximum exponent (see X02BLC) in the model.

4 References

None.

5 Arguments

None.

6 Error Indicators and Warnings

None.

7 Accuracy

None.

8 Parallelism and Performance

X02ALC is not threaded in any implementation.

9 Further Comments

None.

10 Example

None.
NAG Library Manual, Mark 27
Interfaces:  FL   CL   AD 
NAG CL Interface Introduction
X02 (Machine) Chapter Contents
X02 (Machine) Chapter Introduction
x02al:  FL   CL   AD 
© The Numerical Algorithms Group Ltd. 2019