asinh, asinhf, asinhl - inverse hyperbolic sine function
Math library (
libm,
-lm)
#include <math.h>
double asinh(double x);
float asinhf(float x);
long double asinhl(long double x);
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
These functions calculate the inverse hyperbolic sine of
x; that is the
value whose hyperbolic sine is
x.
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.
No errors occur.
For an explanation of the terms used in this section, see
attributes(7).
Interface |
Attribute |
Value |
asinh (), asinhf (), asinhl () |
Thread safety |
MT-Safe |
C99, POSIX.1-2001, POSIX.1-2008.
The variant returning
double also conforms to SVr4, 4.3BSD.
acosh(3),
atanh(3),
casinh(3),
cosh(3),
sinh(3),
tanh(3)