From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,c9d5fc258548b22a X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!postnews.google.com!y31g2000prd.googlegroups.com!not-for-mail From: Shark8 Newsgroups: comp.lang.ada Subject: Re: How do I write directly to a memory address? Date: Tue, 8 Feb 2011 11:53:00 -0800 (PST) Organization: http://groups.google.com Message-ID: References: <67063a5b-f588-45ea-bf22-ca4ba0196ee6@l11g2000yqb.googlegroups.com> <05a3673e-fb97-449c-94ed-1139eb085c32@x1g2000yqb.googlegroups.com> <8r86vgFc3uU1@mid.individual.net> <19fh1chm74f9.11cws0j5bckze.dlg@40tude.net> <4d4ff70e$0$6886$9b4e6d93@newsspool2.arcor-online.net> <737a6396-72bd-4a1e-8895-7d50f287960e@d28g2000yqc.googlegroups.com> <4d5008a5$0$6879$9b4e6d93@newsspool2.arcor-online.net> <4d5031fe$0$6765$9b4e6d93@newsspool3.arcor-online.net> <1f229967-d3cf-42b6-8087-c97ee08652f3@i40g2000yqh.googlegroups.com> <4d511027$0$7661$9b4e6d93@newsspool1.arcor-online.net> NNTP-Posting-Host: 174.28.151.164 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1297194780 30438 127.0.0.1 (8 Feb 2011 19:53:00 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 8 Feb 2011 19:53:00 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: y31g2000prd.googlegroups.com; posting-host=174.28.151.164; posting-account=lJ3JNwoAAAAQfH3VV9vttJLkThaxtTfC User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 ( .NET CLR 3.5.30729; .NET4.0E),gzip(gfe) Xref: g2news2.google.com comp.lang.ada:17991 Date: 2011-02-08T11:53:00-08:00 List-Id: On Feb 8, 2:43=A0am, Georg Bauhaus wrote: > On 2/8/11 9:04 AM, Ludovic Brenta wrote: > > >> void foo(int countdown) > >> { > >> =A0 =A0while (--countdown) { > >> =A0 =A0 =A0fputc('.', stdout); > >> =A0 =A0} > >> =A0 =A0fputc('\n', stdout); > >> } > > > That's what I meant by "variants of premature optimization". > > See why Ada cannot be efficient? =A0;-) But to say that the given C example is efficient is analogous to saying that a function {or constant} "pi" returning the byte '3' is efficient because it takes less space and time* to use. I would, however, be extremely suspicious programs using such an 'optimized' approach. * Because, in general, a single integer operation is faster than the corresponding floating-point operation.