# 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.

## Syntax

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

## 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.

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.

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 .

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.

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