The fmax()
function in C++ is used to return the larger number among two arguments (x
and y
) passed to the function.
The fmax()
function is defined in the <cmath>
header file.
double fmax (double x, double y);float fmax (float x, float y);long double fmax (long double x, long double y);
The fmax()
function takes two parameter values, x
and y
, which represent the first and second arguments of the function, respectively.
The fmax()
function returns the larger value among the x
and y
values.
#include <iostream>#include <cmath>using namespace std;int main(){double x = -2.05, y = -3.5, result;result = fmax(x, y);cout << "fmax(x, y) = " << result << endl;return 0;}
We can see from the code above that the fmax()
function correctly returned -2.05
as the larger value when compared to -3.5
.
We can also use the fmax()
function to compute for the larger number between arguments of different data types, such as a double
and an int
.
#include <iostream>#include <cmath>using namespace std;int main(){// using different argument typesdouble x = 89.1, result;int y = 89;result = fmax(x, y);cout << "fmax(89.1, 89) = " << result << endl;return 0;}
We can see from the code above that the fmax()
correctly returned the double
(89.1
) as the larger value when compared to the int
(89
).