<valarray>
template<class T> valarray<T> exp (const valarray<T>& x);
Compute exponential of valarray elements
Returns a valarray object containing the exponential function values of all the elements of x.
This function overloads cmath's exp function.
Parameters
- x
- valarray containing elements of a type for which the unary function exp is defined.
Return value
A valarray object with the exponential function values of the elements of x.
Example
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// exp valarray example
#include <iostream>
#include <cmath>
#include <valarray>
using namespace std;
int main ()
{
double val[] = {1.1, 2.2, 4.4, 8.8};
valarray<double> foo (val,4);
valarray<double> bar = exp (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;
}
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Output:
foo: 1.1 2.2 4.4 8.8
bar: 3.00417 9.02501 81.4509 6634.24
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See also
| log | Compute natural logarithm of valarray elements (function template) |
| pow | Compute power of valarray elements (function template) |
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