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× C++ Standard Library C++ STL Library


The C++ <cmath> fmax() function is used to return maximum number between the two arguments. If one of the arguments is NaN, then the other argument is returned.

Syntax

double fmax (double x, double y);
float fmax (float x, float y);
long double fmax (long double x, long double y);
double fmax (Type1 x, Type2 y);                                  

Parameters

x Specify value to compare.
y Specify value to compare.

Return Value

Returns the numerically maximum value.

Example:

In the below example, fmax() function is used to find out the maximum value between the two arguments.

#include <iostream>
#include <cmath>
using namespace std;
 
int main (){
  cout<<fmax(50, 100)<<"\n";
  cout<<fmax(5.5, 10.5)<<"\n";
  cout<<fmax(-2, 2)<<"\n"; 
  cout<<fmax(-3, -2)<<"\n";  
  return 0;
}

The output of the above code will be:

100
10.5
2
-2

❮ C++ <cmath> Library