x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
asinh(3) Library Functions Manual asinh(3)
NAME
asinh, asinhf, asinhl - inverse hyperbolic sine function
LIBRARY
Math library (libm, -lm)
SYNOPSIS
#include <math.h>
double asinh(double x);
float asinhf(float x);
long double asinhl(long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
asinh():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| _XOPEN_SOURCE >= 500
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
asinhf(), asinhl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
DESCRIPTION
These functions calculate 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 (nega-
tive infinity) is returned.
ERRORS
No errors occur.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
+--------------------------------------------+---------------+---------+
|Interface | Attribute | Value |
+--------------------------------------------+---------------+---------+
|asinh(), asinhf(), asinhl() | Thread safety | MT-Safe |
+--------------------------------------------+---------------+---------+
STANDARDS
C11, POSIX.1-2008.
HISTORY
C99, POSIX.1-2001.
The variant returning double also conforms to SVr4, 4.3BSD.
SEE ALSO
acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3)
Linux man-pages 6.04 2023-03-30 asinh(3)
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