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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: portable way to get highest bit set?
Date: Sun, 15 Oct 2023 01:35:05 -0700
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jak <nospam@please.ty> writes:

> jak ha scritto:
>
>> Tim Rentsch ha scritto:
>>
>>> jak <nospam@please.ty> writes:
>>>
>>>> unsigned long h_bit(unsigned long val)
>>>> {
>>>>  int i;
>>>>  for(i = 0; val > 1; val /= 2, i++);
>>>>  return val << i;
>>>> }
>>>
>>> A nice compact solution.  I like the way it
>>> naturally deals with the case when val is zero.
>>
>> This is not true because if Val is 0 also the bit shifted to left
>> is, so also its result is 0.  This one of the reason why the exit
>> from the loop is greater than 1.
>
> Sorry about the answer.  I have translated your comment badly.

No worries.  I see how it works, and it's cool.