Path: csiph.com!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: Check if all 256 bits are clear or set ?
Date: Sun, 07 Nov 2021 08:12:16 -0800
Organization: A noiseless patient Spider
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Ben Bacarisse <ben.usenet@bsb.me.uk> writes:

> Tim Rentsch <tr.17687@z991.linuxsc.com> writes:
>
>> Ben Bacarisse <ben.usenet@bsb.me.uk> writes:
>>
>>>   i = 0;
>>>   while (i < n && (unsigned char)~0U == data[i]) i++;
>>>   // i >= n or data[i] != -1
>>>   if (i < n)
>>>        // data[i] != -1
>>>        clrset ^= ALL_SET;
>>>
>>>   i = 0;
>>>   while (i < n && 0 == data[i]) i++;
>>>   // i >= n or data[i] != 0
>>>   if (i < n)
>>>        // data[i] != 0
>>>        clrset ^= ALL_CLEAR;
>
> For the record, not what I would write!  [...]

I never assumed otherwise.  I was just having fun
with the code.