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Re: Pointer goes to null

From Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups comp.lang.c
Subject Re: Pointer goes to null
Date 2020-01-17 23:32 +0000
Organization A noiseless patient Spider
Message-ID <87eevxbqw2.fsf@bsb.me.uk> (permalink)
References (4 earlier) <qv2fm6$n8m$1@dont-email.me> <1bab6894-09d3-41e5-8a79-f068db00b0d8@googlegroups.com> <87lfq8ftxs.fsf@bsb.me.uk> <qvo3s9$q4n$1@dont-email.me> <afc1f2c7-0380-4964-b13d-2b944932bb42@googlegroups.com>

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m.nasim85@gmail.com writes:

>> 
>> I apologize if I did not make it clear that the suggested expression was a substitution for the original ceil() 
>> expression, making the OP's
>>   u64 blk_cnt = (data_bitlen == 0) ? 1 : ceil(data_bitlen / 256.0);
>> into
>>   u64 blk_cnt = (data_bitlen == 0) ? 1 : ((data_bitlen)/256) + ((data_bitlen%256) != 0);
>> and thus keeping the computation within the realm of integer math.
>> 
> don't apologize to me, i have figured that out since first post.
> apologize to Ben Bacarisse :)

He did -- the message you are relying to here was a rely to me!  Mind
you, I hardly think it was called for.  He is obviously a very polite
person.  It was, after all, my mistake to assume he had discarded the
unusual requirement to have the block count be 1.

-- 
Ben.

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Thread

Pointer goes to null m.nasim85@gmail.com - 2020-01-02 01:34 -0800
  Re: Pointer goes to null Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-01-02 12:47 +0000
  Re: Pointer goes to null Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-01-02 08:55 -0500
    Re: Pointer goes to null Bart <bc@freeuk.com> - 2020-01-02 18:49 +0000
      UB awaits... (Was: Pointer goes to null) gazelle@shell.xmission.com (Kenny McCormack) - 2020-01-02 19:53 +0000
        Re: UB awaits... (Was: Pointer goes to null) David Brown <david.brown@hesbynett.no> - 2020-01-02 23:34 +0100
          Re: UB awaits... Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-03 01:43 +0000
            Re: UB awaits... David Brown <david.brown@hesbynett.no> - 2020-01-03 09:50 +0100
              Re: UB awaits... Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-03 14:30 +0000
                Re: UB awaits... David Brown <david.brown@hesbynett.no> - 2020-01-03 17:27 +0100
  Re: Pointer goes to null Bart <bc@freeuk.com> - 2020-01-02 14:07 +0000
    Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-02 07:29 -0800
      Re: Pointer goes to null Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-01-02 10:12 -0800
  Re: Pointer goes to null jak <nospam@please.ty> - 2020-01-02 16:46 +0100
  Re: Pointer goes to null Barry Schwarz <schwarzb@delq.com> - 2020-01-02 08:50 -0800
    Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-03 16:20 -0800
      Re: Pointer goes to null Barry Schwarz <schwarzb@delq.com> - 2020-01-03 22:16 -0800
        Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-07 03:21 -0800
      Re: Pointer goes to null Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-01-07 12:24 -0500
        Re: Pointer goes to null Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-01-07 12:38 -0500
          Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-15 09:36 -0800
            Re: Pointer goes to null Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-15 18:36 +0000
              Re: Pointer goes to null Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-01-15 17:31 -0500
                Re: Pointer goes to null Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-16 02:20 +0000
                Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-17 14:51 -0800
                Re: Pointer goes to null Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-17 23:32 +0000
              Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-17 14:47 -0800
                Re: Pointer goes to null Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-17 23:25 +0000
            Re: Pointer goes to null James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-15 10:49 -0800
              Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-17 14:49 -0800
        Re: Pointer goes to null Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-01-07 09:42 -0800
          Re: Pointer goes to null m.nasim85@gmail.com - 2020-01-15 09:40 -0800
  Re: Pointer goes to null James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-02 22:38 -0500

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