< cpp‎ | numeric‎ | valarray
Defined in header <valarray>
template< class T >
valarray<T> tanh( const valarray<T>& va );

For each element in va computes hyperbolic tangent of the value of the element.


va - value array to apply the operation to

Return value

Value array containing hyperbolic tangent of the values in va.


Unqualified function (tanh) is used to perform the computation. If such function is not available, std::tanh is used due to argument dependent lookup.

The function can be implemented with the return type different from std::valarray. In this case, the replacement type has the following properties:

Possible implementation

template<class T>
valarray<T> tanh(const valarray<T>& va)
    valarray<T> other = va;
    for (T &i : other) {
        i = tanh(i);
    return other;


See also

applies the function std::sinh to each element of valarray
(function template)
applies the function std::cosh to each element of valarray
(function template)
hyperbolic tangent
computes hyperbolic tangent of a complex number
(function template)