tanh


function template
<valarray> 
template<class T> valarray<T> tanh (const valarray<T>& x);

Compute hyperbolic tangent of valarray elements

Returns a valarray object containing the hyperbolic tangents of all the elements of x.

This function overloads cmath's tanh function.

Parameters

x
valarray containing elements of a type for which the unary function tanh is defined.


Return value

A valarray object with the hyperbolic tangent values of the elements of x.

Example

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// tanh valarray example
#include <iostream>
#include <cmath>
#include <valarray>
using namespace std;

int main ()
{
  double val[] = {0.35, 1.22, 3.4};
  valarray<double> foo (val,3);

  valarray<double> bar = tanh (foo);

  cout << "foo: ";
  for (size_t i=0; i<foo.size(); ++i)
	  cout << foo[i] << ' ';
  cout << endl;

  cout << "bar: ";
  for (size_t i=0; i<bar.size(); ++i)
	  cout << bar[i] << ' ';
  cout << endl;

  return 0;
}


Output:

foo: 0.35 1.22 3.4
bar: 0.335376 0.839654 0.997775


See also

tanh (cmath) Compute hyperbolic tangent (function)
sinh Compute hyperbolic sine of valarray elements (function template)
cosh Compute hyperbolic cosine of valarray elements (function template)