double abs (double x); float abs (float x);long double abs (long double x);
double abs (double x); float abs (float x);long double abs (long double x); double abs (T x); // additional overloads for integral types
int values).<cmath> ) for the integral types: These overloads effectively cast x to a double before calculations (defined for T being any integral type ).1
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// cmath's abs example
#include <iostream> // std::cout
#include <cmath> // std::abs
int main ()
{
std::cout << "abs (3.1416) = " << std::abs (3.1416) << '\n';
std::cout << "abs (-10.6) = " << std::abs (-10.6) << '\n';
return 0;
}abs (3.1416) = 3.1416 abs (-10.6) = 10.6