<valarray>
template<class T> valarray<T> abs (const valarray<T>& x);
Compute absolute value of valarray elements
Returns a valarray object containing the absolute values of all the elements of x.
This function overloads cstdlib's abs and cmath's abs functions.
Parameters
- x
- valarray containing elements of a type for which the unary function abs is defined.
Return value
A valarray object with the absolute values of the elements of x.
Example
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// abs valarray example
#include <cstdlib>
#include <iostream>
#include <valarray>
using namespace std;
int main ()
{
int val[] = {5, 3, -10, 4, -7};
valarray<int> foo (val,5);
valarray<int> bar = abs (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: 5 3 -10 4 -7
bar: 5 3 10 4 7
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See also
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