sinh, sinhf, sinhl − hyperbolic sine function
float sinhf(float x);
long double sinhl(long double x);
Link with −lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
_BSD_SOURCE || _SVID_SOURCE ||
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or cc -std=c99
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.
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).
C99, POSIX.1-2001, POSIX.1-2008.
The variant returning double also conforms to SVr4, 4.3BSD, C89.
acosh(3), asinh(3), atanh(3), cosh(3), csinh(3), tanh(3)
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