Question

How to use fdim() function to get the positive difference between x and y in C++

Answer 1

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
	cout << "fdim(2.0, 1.0) = " << fdim(2.0, 1.0) << endl;
	cout << "fdim(1.0, 2.0) = " << fdim(1.0, 2.0) << endl;
	cout << "fdim(-2.0, -1.0) = " << fdim(-2.0, -1.0) << endl;
	cout << "fdim(-1.0, -2.0) = " << fdim(-1.0, -2.0) << endl;
	cout << "fdim(4.0, 1.0) = " << fdim(4.0, 1.0) << endl;
	cout << "fdim(1.0, 4.0) = " << fdim(1.0, 4.0) << endl;
	cout << "fdim(4.0, -1.0) = " << fdim(4.0, -1.0) << endl;
	cout << "fdim(1.0, -4.0) = " << fdim(1.0, -4.0) << endl;

	return 0;
}

/*
run:

fdim(2.0, 1.0) = 1
fdim(1.0, 2.0) = 0
fdim(-2.0, -1.0) = 0
fdim(-1.0, -2.0) = 1
fdim(4.0, 1.0) = 3
fdim(1.0, 4.0) = 0
fdim(4.0, -1.0) = 5
fdim(1.0, -4.0) = 5

*/

 

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