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Showing content from https://cplusplus.com/reference/valarray/sinh/ below:

function template

std::sinh

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

Compute hyperbolic sine of valarray elements

Returns a valarray containing the hyperbolic sines of all the elements of x, in the same order.

The function calls sinh (unqualified) once for each element.

This function overloads cmath's sinh.

Parameters

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

Return value A valarray object with the hyperbolic sine values of the elements of x.

Example

// sinh valarray example
#include <iostream>     // std::cout
#include <cstddef>      // std::size_t
#include <cmath>        // std::sinh(double)
#include <valarray>     // std::valarray, std::sinh(valarray)

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

  std::valarray<double> bar = sinh (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;
}

Output:

foo: 0.35 1.22 3.4
bar: 0.35719 1.54598 14.9654