Scroll to navigation

SINH(3) Linux Programmer's Manual SINH(3)

NAME

sinh, sinhf, sinhl - hyperbolic sine function

SYNOPSIS

#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():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
 
or cc -std=c99

DESCRIPTION

The sinh() function returns 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.

CONFORMING TO

C99, POSIX.1-2001. 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)

COLOPHON

This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
2010-09-20