sqrt


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

Compute square root of valarray elements

Returns a valarray object containing the square root of all the elements of x.

This function overloads cmath's sqrt function.

Parameters

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


Return value

A valarray object with the square roots of the elements of x.

Example

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

int main ()
{
  double val[] = {9.0, 25.0, 100.0};
  valarray<double> foo (val,3);

  valarray<double> bar = sqrt (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: 9 25 100
bar: 3 5 10


See also

sqrt (cmath) Compute square root (function)
pow Compute power of valarray elements (function template)
log Compute natural logarithm of valarray elements (function template)