sinh man page

sinh, sinhf, sinhl — hyperbolic sine function


#include <math.h>

double sinh(double x);

float sinhf(float x);

long double sinhl(long double x);

Link with -lm.

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

sinhf(), sinhl():

|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* Glibc versions <= 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

Return Value

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).

sinh(), sinhf(), sinhl()Thread safetyMT-Safe

Conforming to

C99, POSIX.1-2001, POSIX.1-2008.

The variant returning double also conforms to SVr4, 4.3BSD, C89.

See Also

acosh(3), asinh(3), atanh(3), cosh(3), csinh(3), tanh(3)

Referenced By

acosh(3), asinh(3), atanh(3), cosh(3), tanh(3).

Explore man page connections for sinh(3).

sinhf(3) and sinhl(3) are aliases of sinh(3).