Subject:
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Re:system time
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 19 Mar 1997 01:21:30 GMT
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Original-From:
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Pandit Panburana <PDP@IX.spamcakeNETCOM.COM>
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Viewed:
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3963 times
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Hi Joe,
The mail bounced back to me. I am resending the
mail again.
-Pandit
----------
> From: Pandit Panburana <pdp@ix.netcom.com>
> To: Joe Martin <Joema@mpx.com.au>; handyboard@media.mit.edu
> Subject: Re: Re:Re:system time
> Date: Tuesday, March 18, 1997 6:42 AM
>
> Hi Joe,
>
> From the code below I see that there are a few things
> that I see that may be a bit incorrect.
>
> In the main() function, I see that there is a statement
> "while(1);". This statement is a complete C statement
> which will loop forever with out any body of work done inside.
>
> Secondly, after the "while(1);", there is the statement that
> will start the process as you like to do. I am not fully
> understan the intention but my guesse is that you want to
> start a process once for the time keep track (not in side
> the while(1) loop i.e. you would not want to keep creating
> a process forever). Continue creating processes may
> cause run time error due to board runs out of the resouces
> for processes.
>
> Lastly, the time keeping process that you are creating
> needs to be in the while(1) loop to continue keep track
> of time.
>
> My correct of code (without knowing or understanding
> fully of your intention) is below. It seems that there
> might be a better alternative in implementing the
> the program that you want.
>
> void time (int d)
> {
> while (1) {
> d += 1;
> }
> }
>
> main (void)
> {
> int d;
> /*
> * Get the time at start and start the process
> * to keep update the time.
> */
> start_process(time(d), 1, 50);
> }
>
> For the "casting" question early on, I saw that there is a mail from
> some one that explains "casting". The mail did a nice work to
> explain "casting" and the things that you need to be aware of
> when casting from "float" to "int". Information may loss along
> the way. My personal opionion on "casting" is to avoid if you
> can, good planing can help a lot and it makes code more
> maintainable.
>
> Good luck with you attempt...
>
> Regards,
> -Pandit
>
> ----------
> > From: Joe Martin <Joema@mpx.com.au>
> > To: handyboard@media.mit.edu
> > Subject: Re:Re:system time
> > Date: Tuesday, March 18, 1997 5:54 AM
> >
> > I've posted the wrong code. Try this one:
> >
> > void time(int d)
> > {d+=1;}
> >
> > void main()
> > {int d;
> > while(1);
> > start_process(time(d), 1, 50);
> > }
> >
> > Joe
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