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 ∞ ,if the correct value would overflow. 

SEE ALSO

math(3M), mathtrap(3)

AUTHOR

W. Kahan, Kwok−Choi Ng

NEWS-OSRelease 4.1C