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

NAME
     tanh - hyperbolic tangent function

SYNOPSIS
     #include <&lt;math.h>&gt;

     double
     tanh(double x);

DESCRIPTION
     The tanh() function computes the hyperbolic tangent of x. For a discus-
     sion of error due to roundoff, see math(3).

RETURN VALUES
     The tanh() function returns the hyperbolic tangent value.

SEE ALSO
     acos(3),  asin(3),  atan(3),  atan2(3),  cos(3),  cosh(3),  sin(3),
     sinh(3),  tan(3),  math(3),

STANDARDS
     The tanh() function conforms to ANSI C X3.159-1989 (``ANSI C '').

4.4BSD                           June 4, 1993                                1