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C++ Math fmax() Function

C++ Math fmax() Function with tutorial for beginners and professionals with examples on isgreaterequal(), less(), islessequal(), islessgreater(), isunordered(), exp(), frexp(), ldexp(), log(), log10(), modf(), exp2(), expm1(), log1p(), log2(), logb(), scalbn(), scalbln() etc.

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C++ Math fmax()

The function returns the maximum value between two numbers.

Conditions:

Consider two numbers 'x' and 'y'.

If(x>y): It returns x.
If(y>x): It returns y.
if (x=nan): It returns y.
if (y=nan): It returns x.

Syntax

float fmax(float x, float y);
double fmax(double x, double y);
long double fmax(long double x, long double y);
promoted fmax(Arithmetic x, Arithmetic y);

Note: If any argument has an integral type, then it is cast to double. If any other argument is long double, then it is cast to long double.

Parameter

(x,y): Values among which the maximum value is calculated.

Return value

It returns the maximum value between two numbers.

Example 1

Let's see a simple example.

#include 
#include
using namespace std;
int main()
{
   double x=3.3;
   float y=6.9;
   std::cout <<"Values of x and y are :"<

Output:

Values of x and y are :3.3,6.9
Maximum value is :6.9

In this example, value of y is greater than the value of x. Therefore, fmax() function returns the value of y.

Example 2

Let's see a simple example when one of the value is nan.

#include 
#include
using namespace std;
int main()
{
   double x=1.3;
   float y=NAN;
   std::cout <<"Values of x and y are :"<

Output:

Values of x and y are :1.3,nan
Maximum value is :1.3

In this example, value of y is nan.Therefore, fmax() function returns the value of x.


Next TopicC++ Math Functions




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