NAME

sinh, cosh, tanh − hyperbolic functions

SYNTAX

#include <math.h>

double sinh(x)
double x;

float fsinh(x)
float x;

double cosh(x)
double x;

float fcosh(x)
float x;

double tanh(x)
double x;

float ftanh(x)
float x;

DESCRIPTION

These functions compute the designated hyperbolic functions for double and float data types. 

DIAGNOSTICS

The sinh and cosh functions return +∞ (and sinh may return -∞ for negative x) if the correct value would overflow.

ERROR

Below 2.4 ulps (unit in the last place). 

SEE ALSO

math(3m)

Subroutines