ASINH
ASINH
Section: Linux Programmer's Manual (3) Updated: 2010-09-20 Local index
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NAME
asinh, asinhf, asinhl - inverse hyperbolic sine function
SYNOPSIS
#include <math.h >
double asinh(double x );
float asinhf(float x );
long double asinhl(long double x );
Link with -lm .

Feature Test Macro Requirements for glibc (see
feature_test_macros (7)):

asinh ():

_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 ||
_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or
cc -std=c99
asinhf (),
asinhl ():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or
cc -std=c99
DESCRIPTION
The
asinh ()
function calculates the inverse hyperbolic sine of
x ; that is the value whose hyperbolic sine is x .
RETURN VALUE
On success, these functions return the inverse hyperbolic sine of
x .
If
x
is a NaN, a NaN is returned.

If
x
is +0 (-0), +0 (-0) is returned.

If
x
is positive infinity (negative infinity),
positive infinity (negative infinity) is returned.

ERRORS
No errors occur.
CONFORMING TO
C99, POSIX.1-2001.
The variant returning
double
also conforms to
SVr4, 4.3BSD, C89.
SEE ALSO
acosh (3),
atanh (3),
casinh (3),
cosh (3),
sinh (3),
tanh (3)
COLOPHON
This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.

Index
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO
COLOPHON
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