sinh - Man Page

hyperbolic sine function

Library

Math library (libm, -lm)

Synopsis

#include <math.h>

double sinh(double x);
float sinhf(float x);
long double sinhl(long double x);

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

sinhf(), sinhl():

    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
        || /* Since glibc 2.19: */ _DEFAULT_SOURCE
        || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

Description

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.

Errors

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.

Attributes

For an explanation of the terms used in this section, see attributes(7).

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

Standards

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).

The man pages sinhf(3) and sinhl(3) are aliases of sinh(3).

2022-10-09 Linux man-pages 6.01