NAG Library Manual, Mark 28.3
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NAG CL Interface
x07bbc (create_​nan)

NAG Library Manual, Mark 28.3
Interfaces:  FL   CL   CPP   AD 
NAG CL Interface Introduction
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X07 (Ieee) Chapter Introduction
x07bb:  FL   CL   CPP   AD 

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© The Numerical Algorithms Group Ltd. 2022
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1 Purpose

x07bbc creates a NaN (Not A Number).

2 Specification

#include <nag.h>
void  x07bbc (Integer quiet, double *x)
The function may be called by the names: x07bbc, nag_ieee_create_nan or nag_create_nan.

3 Description

x07bbc sets x to be a quiet or a signalling NaN (Not A Number).

4 References

IEEE (2008) Standard for Floating-Point Arithmetic IEEE Standard 754-2008 IEEE, New York.

5 Arguments

1: quiet – Integer Input
On entry: determines whether a quiet or a signalling NaN is to be created. If quiet=1, the returned NaN is quiet, otherwise it is signalling. See reference IEEE (2008) for the distinction between the two kinds.
2: x – double * Output
On exit: the required NaN value.

6 Error Indicators and Warnings

None.

7 Accuracy

Not applicable.

8 Parallelism and Performance

x07bbc is not threaded in any implementation.

9 Further Comments

None.

10 Example

See x07aac.
NAG Library Manual, Mark 28.3
Interfaces:  FL   CL   CPP   AD 
NAG CL Interface Introduction
X07 (Ieee) Chapter Contents
X07 (Ieee) Chapter Introduction
x07bb:  FL   CL   CPP   AD 
© The Numerical Algorithms Group Ltd. 2022