JavaScript Math.clz32() Function

The Math.clz32( ) function in JavaScript returns the number of leading zero bits in the 32-bit binary representation of a number. Clz32 stands for Count Leading Zeros 32. If the passed parameter is not a number, then it will be converted into a number first and then converted to a 32-bit unsigned integer. If the converted 32-bit unsigned integer is 0, then the function returns 32, since all the bits are 0.

Syntax:

Math.clz32(number)

Parameters Used: number: It is the value that is to be tested for CountLeadingZeros. 

Return Value: It returns the number of leading zero bits in the 32-bit binary representation of the given number.

Example 1: When a positive number is passed as a parameter. 

Javascript

<script type="text/javascript">
        console.log("Output : " + Math.clz32(5));
    </script>

Output:

Output : 29

Example 2: When a negative number is passed as a parameter. 

Javascript

<script type="text/javascript">
        console.log("Output : " + Math.clz32(-5));
    </script>

Output:

Output : 0

Example 3: When zero is passed as a parameter. 

Javascript

<script type="text/javascript">
        document.write("Output : " + Math.clz32(0));
    </script>

Output:

Output : 32

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

Supported Browsers:

• Google Chrome 1 and above
• Internet Explorer 3 and above
• Firefox 1 and above
• Opera 3 and above
• Safari 1 and above