Published Oct 26, 2022Updated Dec 21, 2022
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The fmin() function returns the smaller of two arguments.


fmin(x, y)

The parameters x and y are usually a numeric data type ranging from negative to positive INFINITY. If one of the parameters is NaN, then the other parameter is returned.


The following example uses the fmin() function to find the smaller value between 3 and 5:

#include <iostream>
#include <cmath>
int main() {
double x = 3;
double y = 5;
double result;
result = fmin(x, y);
std::cout << "The smaller value between " << x << " and " << y << " is " << result << "\n";

This produces the following output:

The smaller value between 3 and 5 is 3

Codebyte Example

The following example returns the smaller value between -32.123 and -32.231:


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