=====tanh=====
Syntax:

<code>
    #include <cmath>
    double tanh( double arg );
</code>
The function tanh() returns the hyperbolic tangent of arg.

C++ also provides the following overloaded forms:
<code>
    #include <cmath>
    float tanh( float arg ); // same as tanhf() in C99
    long double tanh( long double arg ); // same as tanhl() in C99
</code>

Related Topics: [[acos]], [[asin]], [[atan]], [[atan2]], [[cos]], [[cosh]], [[sin]], [[sinh]], [[tan]]