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

NAME
       tanh - hyperbolic tangent function

SYNOPSIS
       #include <math.h>

       double tanh(double x);

DESCRIPTION
       The  tanh()  function returns the hyperbolic tangent of x,
       which is defined mathematically as sinh(x) / cosh(x).

CONFORMING TO
       SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO
       acosh(3), asinh(3), atanh(3), cosh(3), sinh(3)

                          June 13, 1993                         1