C++ Math exp2() Function

C++ Math exp2() 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 exp2()

The function computes the base - 2 exponential function of a given number.

Suppose a number is 'x':

exp2(x) = 2^x

Syntax

float exp2(float x);
double exp2(double x);
long double exp2(long double x);
double exp2(integral x);

Parameter

x: It is the value of the exponent.

Return value

It returns, 2 raised to the power x.

Example 1

Let's see a simple example when the value of x is positive

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
 int x= 4;
 std::cout << "Value of x is : " <<x <<std::endl;
 cout<<"exp2(x) = "<<exp2(4);
 return 0;
}

Output:

Value of x is : 4
exp2(x) = 16

Example 2

Let's see a simple example when the value of x is negative.

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
 int x= -2;
 std::cout << "Value of x is : " <<x <<std::endl;
 cout<<"exp2(x) = "<<exp2(x);
 return 0;
}

Output:

Value of x is : -2
exp2(x) = 0.25

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