NAG Library Manual, Mark 28.7
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NAG CL Interface
x07bac (create_infinity)
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NAG Library Manual, Mark 28.7
Interfaces:
FL
CL
CPP
AD
PY
MB
NAG CL Interface Introduction
X07 (Ieee) Chapter Contents
X07 (Ieee) Chapter Introduction
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FL
CL
CPP
AD
PY
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▸
▿
Contents
1
Purpose
2
Specification
3
Description
4
References
5
Arguments
6
Error Indicators and Warnings
7
Accuracy
8
Parallelism and Performance
9
Further Comments
10
Example
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1
Purpose
x07bac
creates a signed infinite value.
2
Specification
copy
#include <nag.h>
void
x07bac
(
Integer
isign
,
double *
x
)
The function may be called by the names:
x07bac
,
nag_ieee_create_infinity
or
nag_create_infinity
.
3
Description
x07bac
sets
x
to be positive or negative infinity.
4
References
IEEE (2008)
Standard for Floating-Point Arithmetic
IEEE Standard 754-2008
IEEE, New York.
5
Arguments
1:
isign
–
Integer
Input
On entry
: determines the sign of the infinity to be created.
If
isign
is greater than or equal to
0
, a positive infinity is returned, otherwise a negative infinity is returned.
2:
x
–
double *
Output
On exit
: the required infinite value.
6
Error Indicators and Warnings
None.
7
Accuracy
Not applicable.
8
Parallelism and Performance
Background information to multithreading can be found in the
Multithreading
documentation.
x07bac
is not threaded in any implementation.
9
Further Comments
None.
10
Example
See
x07aac
.
NAG Library Manual, Mark 28.7
Interfaces:
FL
CL
CPP
AD
PY
MB
NAG CL Interface Introduction
X07 (Ieee) Chapter Contents
X07 (Ieee) Chapter Introduction
x07ba:
FL
CL
CPP
AD
PY
MB
© The Numerical Algorithms Group Ltd. 2022