sinh, sinhf, sinhl - hyperbolic sine function
Math library (
libm,
-lm)
#include <math.h>
double sinh(double x);
float sinhf(float x);
long double sinhl(long double x);
sinhf(),
sinhl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
These functions return the hyperbolic sine of
x, which is defined
mathematically as:
sinh(x) = (exp(x) - exp(-x)) / 2
On success, these functions return the 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.
If the result overflows, a range error occurs, and the functions return
HUGE_VAL,
HUGE_VALF, or
HUGE_VALL, respectively, with the
same sign as
x.
See
math_error(7) for information on how to determine whether an error
has occurred when calling these functions.
The following errors can occur:
- Range error: result overflow
-
errno is set to ERANGE. An overflow
floating-point exception (FE_OVERFLOW) is raised.
For an explanation of the terms used in this section, see
attributes(7).
Interface |
Attribute |
Value |
sinh (), sinhf (), sinhl () |
Thread safety |
MT-Safe |
C99, POSIX.1-2001, POSIX.1-2008.
The variant returning
double also conforms to SVr4, 4.3BSD.
acosh(3),
asinh(3),
atanh(3),
cosh(3),
csinh(3),
tanh(3)