docs(ispowerof2): make subject clearer

Add definition of power of 2
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nprimo 2023-01-13 16:21:09 +00:00 committed by Niccolò Primo
parent 2b77c87031
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### Instructions
Write a program that determines if a given number is a power of 2.
Write a program that determines if a given number is a power of 2. A number `n` is a power of 2 if it meets the following condition: $n = 2 ^ m$ where m is another integer number.
For example, $4 = 2 ^ 2$ or $16 = 2 ^ 4$ are power of 2 numbers while 24 is not.
This program must print `true` if the given number is a power of 2, otherwise it has to print `false`.
@ -10,6 +12,8 @@ This program must print `true` if the given number is a power of 2, otherwise it
- When there is only one argument, it will always be a positive valid `int`.
### Usage :
```console