How to Use the Math.log2 Function in JavaScript?

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The Math.log2() function in JavaScript returns the base-2 logarithm of a number. It can be useful for finding the number of bits required to represent a number in binary.

Here’s an example of how to use the Math.log2() function:

let number = 8;
let log2 = Math.log2(number);

console.log(log2);

This will output 3, which is the base-2 logarithm of 8.

You can also use the Math.log2() function to calculate the number of bits required to represent a number in binary, like this:

let number = 8;
let bits = Math.ceil(Math.log2(number + 1));

console.log(bits);

This will output 4, which is the number of bits required to represent 8 in binary. The Math.ceil() function is used to round up to the nearest integer, because the number of bits required must be an integer.

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