C++ fdim()

Introduction

fdim() is a built-in math function in C++ that calculates the positive difference between two numbers.

Syntax

The syntax of fdim() function is as follows:

#include <cmath>

double fdim(double x, double y);

Parameters

The fdim() function takes two parameters:

• x: A double value representing the first number.
• y: A double value representing the second number.

Return Value

The fdim() function returns a double value representing the positive difference between x and y. If x is greater than or equal to y, it returns x - y. If x is smaller than y, it returns 0.

Example

Here's an example usage of the fdim() function:

#include <iostream>
#include <cmath>

int main() {
    double x = 10.5;
    double y = 7.2;
    double difference = fdim(x, y);
    
    std::cout << "Positive difference between " << x << " and " << y << " is: " << difference << std::endl;
    
    return 0;
}

The output of the above code will be:

Positive difference between 10.5 and 7.2 is: 3.3

In this example, fdim() is used to calculate the positive difference between x and y, and the result is stored in the difference variable. The output statement then displays the calculated difference.

Remarks

• The fdim() function is available in the <cmath> header in C++.
• It can be used to avoid negative values when calculating differences between two numbers.
• fdim() is useful in a variety of applications, such as when working with geometric calculations or physics simulations.

For more information on fdim(), you can refer to the C++ reference documentation.