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C++ Math islessequal() Function

C++ Math islessequal() 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 islessequal()

The islessequal() function checks whether the value of first argument is less than or equal to the second argument. If the value of first argument is less than or equal to the value of second argument, then it returns 1 otherwise 0.

Note: If one or both the arguments are NAN then the function returns false(0).

Syntax

Consider two numbers 'x' and 'y'. Syntax would be:

bool islessequal(float x,float y);
bool islessequal(double x,double y);
bool islessequal(long double x,long double y);
bool islessequal(Arithmetic x,Arithmetic y);

Parameter

(x,y): The values which we want to compare.

Return value

Parameter(x,y) Return value
x<=y 1
x>y or x=nan or y=nan 0

Example 1

Let's see a simple example when both x and y are of same type.

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
  float x= 3.4;
  float y=3.4;
  cout<<"Values of x and y are : "<<x<<","<<y<<'\n';
  cout<<"islessequal(x,y) : "<<islessequal(x,y);
  return 0;
}

Output:

Values of x and y are : 3.4,3.4
islessequal(x,y) : 1

In this example, islessequal() function determines that both x and y are equal. Therefore, it returns 1.

Example 2

Let's see a simple example when both x and y are of different type.

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
  float x= 7.8;
  int y=2;
  cout<<"Values of x and y are : "<<x<<","<<y<<'\n';
  cout<<"islessequal(x,y) : "<<islessequal(x,y);
  return 0;
}

Output:

 Values of x and y are : 7.8,2
 islessequal(x,y) : 0

In this example, x is greater than y. Therefore, the function returns 0.

Example 2

Let's see a simple example .

#include <iostream>
#include<math.h>
using namespace std;
int main()
{
  float x= 0.0/0.0;
  float y=0.0/0.0;
  cout<<"Values of x and y are : "<<x<<","<<y<<'\n';
  cout<<"islessequal(x,y) : "<<islessequal(x,y);
  return 0;
}

Output:

Values of x and y are : nan,nan
islessequal(x,y) : 0

In this example, both x and y are NAN. Therefore, the function returns 0.


Next TopicC++ Math Functions




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