Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?)

From	Richard Damon <news.x.richarddamon@xoxy.net>
Newsgroups	comp.lang.c++
Subject	Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?)
Date	2011-10-16 16:40 -0400
Organization	A noiseless patient Spider
Message-ID	<j7ffg2$t62$1@dont-email.me> (permalink)
References	(2 earlier) <4ecf2948-8536-44e4-8226-2a0f339ece27@z26g2000yqh.googlegroups.com> <9fud8dFvblU6@mid.individual.net> <890f7f8d-21b6-4068-9292-c88f24dc023e@v8g2000vbe.googlegroups.com> <j7dcfu$e8c$1@dont-email.me> <slrnj9m85k.1bk.grahn+nntp@frailea.sa.invalid>

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On 10/16/11 2:21 PM, Jorgen Grahn wrote:
> On Sun, 2011-10-16, Richard Damon wrote:
>> On 10/15/11 6:43 PM, Martin Jørgensen wrote:
> ...
>>> Hmm... Based on my output to Richard - do I then have an endian
>>> problem? Sorry I'm a bit too unexperienced to fully understand this
>>> yet. A few replies and I think I'll understand it..
>
>> Your data in the file is little endian. You have a problem if your
>> processor is not little endian.
>
> The usual interpretation is that this means he *does* have a problem.
> Good code is supposed to have the same behavior no matter what
> endianness the processor happens to have.
>
> /Jorgen
>

Only so far as he need to confirm that his machine is little endian. 
Good code runs reliably on the machines it is targeted, and minimizes 
the possible issues in moving it to other machines it might possible by 
run on.

If the program is know to only need to be run on a limited set of 
machines (like it is a windows program), than assuming properties common 
to the windows platform isn't totally bad. Later version of windows are 
very unlikely to switch endianness without other major issues coming up.

Him move to having a template function move a given type of data is an 
improvement, as it localizes the assumption. I would not at this point 
rewrite those functions to be endian neutral.

Thread

reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 12:00 -0700
  Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Ian Collins <ian-news@hotmail.com> - 2011-10-16 09:29 +1300
    Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 14:17 -0700
      Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Ebenezer <woodbrian77@gmail.com> - 2011-10-15 14:41 -0700
      Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Ian Collins <ian-news@hotmail.com> - 2011-10-16 10:45 +1300
        Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Martin Jørgensen <mjoerg@gmail.com> - 2011-10-15 15:43 -0700
          Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-15 21:37 -0400
            Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 23:23 -0700
              Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Ian Collins <ian-news@hotmail.com> - 2011-10-16 20:53 +1300
                Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-16 03:04 -0500
                Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Ian Collins <ian-news@hotmail.com> - 2011-10-16 21:52 +1300
            Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-16 18:21 +0000
              Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-16 16:40 -0400
                Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Ian Collins <ian-news@hotmail.com> - 2011-10-17 10:00 +1300
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 15:19 -0700
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-16 20:03 -0400
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 17:49 -0700
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-16 21:29 -0400
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-17 09:10 +0000
  Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-15 17:35 -0400
    Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Martin Jørgensen <mjoerg@gmail.com> - 2011-10-15 15:39 -0700
      Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 16:12 -0700
        Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 16:32 -0700
          Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-15 19:41 -0400
            Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 11:33 -0700
              Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-16 13:54 -0500
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-16 14:01 -0500
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 15:12 -0700
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Richard Damon <news.x.richarddamon@xoxy.net> - 2011-10-16 20:14 -0400
                Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 17:56 -0700
      Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Ian Collins <ian-news@hotmail.com> - 2011-10-16 12:33 +1300
        Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 16:37 -0700
        Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Leigh Johnston <leigh@i42.co.uk> - 2011-10-16 19:59 +0100
          Re: reading binary file into memory. Converting from char to uint32,   float, double, ASCII strings etc (static_cast< > ?) Leigh Johnston <leigh@i42.co.uk> - 2011-10-16 20:13 +0100
            Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Joshua Maurice <joshuamaurice@gmail.com> - 2011-10-17 18:17 -0700
              Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Joshua Maurice <joshuamaurice@gmail.com> - 2011-10-17 18:32 -0700
  Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2011-10-15 19:56 -0400
    Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-15 23:27 -0700
      Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-16 02:48 -0500
        Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 10:57 -0700
          Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-16 13:18 -0500
            Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 12:52 -0700
  Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 10:58 -0700
    Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-16 13:37 -0500
      Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) someone <newsboost@gmail.com> - 2011-10-16 14:37 -0700
        Re: reading binary file into memory. Converting from char to uint32, float, double, ASCII strings etc (static_cast< > ?) Paavo Helde <myfirstname@osa.pri.ee> - 2011-10-17 01:21 -0500

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