NAME

sinh, cosh, tanh − hyperbolic functions

SYNOPSIS

#include <math.h>

double sinh(x)
double x;

double cosh(x)
double x;

double tanh(x)
double x;

DESCRIPTION

These functions compute the designated hyperbolic functions for real arguments. 

ERROR (due to Roundoff etc.)

Below 2.4 ulps; an ulp is one Unit in the Last Place. 

DIAGNOSTICS

Sinh and cosh return the reserved operand on a VAX if the correct value would overflow. 

SEE ALSO

math(3M), infnan(3M)

AUTHOR

W. Kahan, Kwok−Choi Ng

4th Berkeley Distribution  —  May 12, 1986