From: dvdeug@x8b4e53cd. (David Starner)
Subject: Re: Ada95 Strengths/Weaknesses.
Date: 1999/09/28
Date: 1999-09-28T00:00:00+00:00 [thread overview]
Message-ID: <7spauv$a2g2@news.cis.okstate.edu> (raw)
In-Reply-To: 7sp8m9$a6e$1@nnrp1.deja.com
In article <7sp8m9$a6e$1@nnrp1.deja.com>, Robert Dewar wrote:
>In article <7smp30$9aa1@news.cis.okstate.edu>,
> dstarner98@aasaa.ofe.org wrote:
>
>> * C compilers have a standardized interface. OTOH, you can
>> distinuigsh Ada compilers by the required file names
>
>Are there really Ada compilers that have "required file names"?
>Certainly GNAT does not have required file names.
It cetianly has preferred file names, which are different from
the preferred names of other compilers.
>So this to me is one place that Ada clearly wins over C, rather
>than loses.
I guess I wasn't very clear. For most C compilers, I can say
cc -o joebob joebob.c
and it will work. This isn't true for Ada. There is no standaradized
interface, and there's not even standard file names.
>> * C & C++ compilers will usually produce smaller and faster
>> code, albeit usually less than an order of magnitude.
>
>Well an order of magnitude would be a catastrophe, but in fact
>the statement is just false. If your Ada compiler produces
>junk code, get another one. In the case of GNAT, the compiler
>uses exactly the same code generator as the GNU C compiler or
>the G++ compiler, so for comparable source code, you get
>identical object code.
Check. I just recently hand converted a small game from C++ to Ada using
G++ and GNAT respectively. The only changes besides that were going from
0 based indexing to 1 based, and dropping some debug code in the process.
g++ *.cpp -o Alexis produces a binary with a size of 15,796 bytes. gnatmake
alexis-char produces a binary with a size of 735,962 bytes. Some tweaks later
(dynamic linking, no runtime checks, striping the files) produces a C++ binary
of 12,568 bytes and an Ada binary of 51,124 bytes. Stripping out the random
number library I had used from Mat Weber's Components (which cripples the
program, but to be fair Mat Weber says it's redundant with Ada95, so I could
probably remove it if I knew how) brings us down to 32,196, over twice the
size of the original.
So, since GNAT is junk, do you have another Ada compiler to recommend?
David Starner - dstarner98@aasaa.ofe.org
next prev parent reply other threads:[~1999-09-28 0:00 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-09-27 0:00 Ada95 Strengths/Weaknesses the middleman
1999-09-27 0:00 ` Steve Doiel
1999-09-27 0:00 ` J. David Bryan
1999-09-27 0:00 ` David Starner
1999-09-28 0:00 ` the middleman
1999-09-28 0:00 ` Robert Dewar
1999-09-28 0:00 ` David Starner [this message]
1999-09-28 0:00 ` p.obry
1999-09-28 0:00 ` David Starner
1999-09-28 0:00 ` Richard D Riehle
1999-09-28 0:00 ` Gautier
1999-09-28 0:00 ` David Starner
1999-09-29 0:00 ` Robert Dewar
1999-09-28 0:00 ` Ed Falis
1999-09-28 0:00 ` David Starner
1999-09-29 0:00 ` Robert Dewar
1999-09-28 0:00 ` Ted Dennison
1999-09-28 0:00 ` Simon Wright
1999-09-28 0:00 ` Robert Dewar
1999-09-28 0:00 ` David Starner
1999-09-29 0:00 ` Robert Dewar
1999-09-30 0:00 ` Pragma (was Re: Ada95 Strengths/Weaknesses.) Preben Randhol
1999-09-30 0:00 ` Preben Randhol
1999-09-28 0:00 ` Ada95 Strengths/Weaknesses Robert Dewar
1999-09-28 0:00 ` Code size of Ada ? was " Alfred Hilscher
1999-09-28 0:00 ` Gautier
1999-09-28 0:00 ` David Botton
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Larry Kilgallen
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Alfred Hilscher
1999-09-29 0:00 ` Ted Dennison
1999-09-29 0:00 ` Gautier
1999-09-29 0:00 ` Ed Falis
1999-09-29 0:00 ` Gautier
1999-09-29 0:00 ` tmoran
1999-09-30 0:00 ` Robert Dewar
1999-09-29 0:00 ` Robert Dewar
1999-09-30 0:00 ` Alfred Hilscher
1999-09-30 0:00 ` Gautier
1999-09-30 0:00 ` Robert Dewar
1999-09-30 0:00 ` Robert Dewar
1999-09-30 0:00 ` Robert Dewar
1999-09-30 0:00 ` Robert Dewar
1999-09-30 0:00 ` tmoran
1999-09-30 0:00 ` Ehud Lamm
1999-09-30 0:00 ` Robert Dewar
[not found] ` <7t2e1l$lqt2@ftp.kvaerner.com>
[not found] ` <37F91D6E.58685CFE@mitre.org>
[not found] ` <7tf7uo$h2b$1@nnrp1.deja.com>
[not found] ` <37FBA978.A86762F1@mitre.org>
1999-10-18 0:00 ` Robert Dewar
1999-10-19 0:00 ` Code size of Ada ? Robert I. Eachus
[not found] ` <7tf7uo <37FBA978.A86762F1@mitre.org>
[not found] ` <5OkO3.2$1e.659@typhoon.nyu.edu>
1999-10-19 0:00 ` Code size of Ada ? was Re: Ada95 Strengths/Weaknesses Robert I. Eachus
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Alfred Hilscher
1999-09-29 0:00 ` Robert Dewar
1999-09-30 0:00 ` Alfred Hilscher
1999-09-30 0:00 ` Gautier
1999-09-30 0:00 ` Robert Dewar
1999-09-28 0:00 ` GNAT listing file default names (was: Ada95 Strengths/Weaknesses) Larry Kilgallen
1999-09-28 0:00 ` Gautier
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Larry Kilgallen
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Larry Kilgallen
1999-09-30 0:00 ` Robert Dewar
1999-09-28 0:00 ` Ada95 Strengths/Weaknesses Robert Dewar
1999-09-28 0:00 ` David Starner
1999-09-28 0:00 ` Robert Dewar
1999-09-28 0:00 ` Ray Blaak
1999-09-28 0:00 ` David Starner
1999-09-29 0:00 ` Robert A Duff
1999-09-27 0:00 ` Marin David Condic
1999-09-27 0:00 ` Hyman Rosen
1999-09-28 0:00 ` Ed Falis
1999-09-28 0:00 ` Hyman Rosen
1999-09-28 0:00 ` Ed Falis
1999-09-28 0:00 ` Robert Dewar
1999-09-28 0:00 ` Preben Randhol
1999-09-28 0:00 ` bill
1999-09-27 0:00 ` Aidan Skinner
1999-09-28 0:00 ` Steve Doiel
1999-09-28 0:00 ` Larry Kilgallen
1999-09-28 0:00 ` Preben Randhol
1999-09-28 0:00 ` Preben Randhol
1999-09-28 0:00 ` Geoff Bull
1999-09-29 0:00 ` the middleman
1999-09-29 0:00 ` Robert A Duff
1999-09-28 0:00 ` Geoff Bull
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