NAG Library Manual, Mark 26
NAG AD Library Manual, Mark 26
NAG C Library Manual, Mark 26
X07 (ieee) Chapter Contents
X07 (ieee) Chapter Introduction
NAG Library Routine Document
x07baf (create_infinity)
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NAG Library Manual, Mark 26
NAG AD Library Manual, Mark 26
NAG C Library Manual, Mark 26
X07 (ieee) Chapter Contents
X07 (ieee) Chapter Introduction
▸
▿
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
© The Numerical Algorithms Group Ltd. 2018
1
Purpose
x07baf
creates a signed infinite value.
2
Specification
Fortran Interface
Subroutine x07baf (
isign
,
x
)
Integer, Intent (In)
::
isign
Real (Kind=nag_wp), Intent (Out)
::
x
C Header Interface
#include <nagmk26.h>
void
x07baf_ (
const Integer *
isign
,
double *
x
)
3
Description
x07baf
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
– Real (Kind=nag_wp)
Output
On exit
: the required infinite value.
6
Error Indicators and Warnings
None.
7
Accuracy
Not applicable.
8
Parallelism and Performance
x07baf
is not threaded in any implementation.
9
Further Comments
None.
10
Example
See
Section 10
in
x07aaf
.
NAG Library Manual, Mark 26
NAG AD Library Manual, Mark 26
NAG C Library Manual, Mark 26
X07 (ieee) Chapter Contents
X07 (ieee) Chapter Introduction
© The Numerical Algorithms Group Ltd. 2018