function template
<valarray>
std::tanh
template<class T> valarray<T> tanh (const valarray<T>& x);
Compute hyperbolic tangent of valarray elements
Returns a valarray containing the hyperbolic tangents of all the elements of x, in the same order.
The function calls tanh (unqualified) once for each element.
This function overloads cmath's tanh.
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> // std::cout
#include <cstddef> // std::size_t
#include <cmath> // std::tanh(double)
#include <valarray> // std::valarray, std::tanh(valarray)
int main ()
{
double val[] = {0.35, 1.22, 3.4};
std::valarray<double> foo (val,3);
std::valarray<double> bar = tanh (foo);
std::cout << "foo:";
for (std::size_t i=0; i<foo.size(); ++i)
std::cout << ' ' << foo[i];
std::cout << '\n';
std::cout << "bar:";
for (std::size_t i=0; i<bar.size(); ++i)
std::cout << ' ' << bar[i];
std::cout << '\n';
return 0;
}
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Output:
foo: 0.35 1.22 3.4
bar: 0.335376 0.839654 0.997775
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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)