From: tmoran@bix.com
Subject: Re: First time Ada has let me down
Date: Thu, 26 Oct 2000 06:42:06 GMT
Date: 2000-10-26T06:42:06+00:00 [thread overview]
Message-ID: <2nQJ5.357270$i5.5665339@news1.frmt1.sfba.home.com> (raw)
In-Reply-To: 8t60eo$m0m$1@nnrp1.deja.com
>the length is just len = (*p)&0xf;
>the TCP header length occupies the 4 MSB. the length in this case
>is then ((*p)&0xf0)>>4;
>Things just have to be easy in C, don't they. No wonder 99.99% of the
If you really insist on avoiding the tools the language supplies,
a rep clause in this case, and
"len := buffer(i) mod 16; header_len := buffer(i)/16;"
is insufficiently easy, then how about
len := len_part(buffer(i)); header_len := Header_len_part(buffer(i));
where
len_part : constant array(byte) of integer
:= (0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
...
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15);
and similarly for header_len_part. This is quick to write, quick to
execute, puts the definitions in a single place where they can be
changed without finding all the "and 16#0F"s in the program, and
they could even become functions if that became necessary.
next prev parent reply other threads:[~2000-10-26 6:42 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-25 3:50 First time Ada has let me down Shifty
2000-10-25 0:00 ` First time Ada has let me down (recipe) Guillaume
2000-10-26 2:45 ` Mats Weber
2000-10-25 0:00 ` First time Ada has let me down wv12
2000-10-25 0:00 ` Joel Seidman
2000-10-25 0:00 ` Gisle Sælensminde
2000-10-25 0:00 ` Gautier
2000-10-26 6:42 ` tmoran [this message]
2000-10-25 0:00 ` Larry Kilgallen
2000-10-25 0:00 ` Ted Dennison
2000-10-25 0:00 ` Larry Kilgallen
2000-10-25 0:00 ` Ted Dennison
2000-10-25 0:00 ` Ken Garlington
2000-10-25 0:00 ` Shifty
2000-10-26 4:00 ` Jeff Carter
2000-10-26 14:43 ` Ted Dennison
2000-10-26 17:55 ` tmoran
2000-10-26 17:12 ` Shifty
2000-10-27 1:00 ` Jeff Carter
2000-10-26 22:27 ` Guillaume
2000-10-26 21:49 ` Keith Thompson
2000-10-26 14:36 ` Ted Dennison
2000-10-26 17:55 ` tmoran
2000-10-26 23:08 ` Ted Dennison
2000-10-25 4:44 ` Julian Morrison
2000-10-25 4:50 ` Ted Dennison
2000-10-24 0:00 ` Keith Thompson
2000-10-26 0:00 ` Andreas Schulz
2000-10-26 18:05 ` Alejandro Villanueva
2000-10-26 21:46 ` Tucker Taft
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