reference/C/MAN/tanh.htm


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<TITLE>tanh</TITLE>
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<pre>


<h3>TANH(3)             Linux Programmer's Manual             TANH(3)
</h3>

<h3>NAME
</h3>       tanh - hyperbolic tangent function

<h3>SYNOPSIS
</h3>       #include &lt;math.h&gt;

       double tanh(double x);

<h3>DESCRIPTION
</h3>       The  tanh()  function returns the hyperbolic tangent of x,
       which is defined mathematically as sinh(x) / cosh(x).

<h3>CONFORMING TO
</h3>       SVID 3, POSIX, BSD 4.3, ISO 9899

</pre>
<hr>
<h3>SEE ALSO
</h3><p>
<a href=acosh.htm>acosh</a>, 
<a href=asinh.htm>asinh</a>, 
<a href=atanh.htm>atanh</a>, 
<a href=cosh.htm>cosh</a>, 
<a href=sinh.htm>sinh</a>, 
<pre>


                          June 13, 1993                         1


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