fdim()

#include <cmath>

double fdim (double x, double y) 

Liefert positive Differenz von x und y oder 0.

Rückgabewert: x>y ? x-y : 0.

-

fdim.cpp

#include <cmath>
#include <iostream>
 
int main()
{
  double x = 13, y = 5;
 
  std::cout << "positive Differenz " << std::fdim(x, y) << '\n';
}