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=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,382fcf8feeefdd50 X-Google-Thread: 1014db,382fcf8feeefdd50 X-Google-Attributes: gid103376,gid1014db,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!news1.google.com!newsfeed.stanford.edu!headwall.stanford.edu!newshub.sdsu.edu!flpi089.ffdc.sbc.com!prodigy.net!flpi088.ffdc.sbc.com!prodigy.com!flpi107.ffdc.sbc.com!nlpi061.nbdc.sbc.com.POSTED!cfe18fef!not-for-mail From: Gary Scott Organization: Home User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: comp.lang.ada,comp.lang.c Subject: Re: computer language used to program Mars Lander References: <185ee7f9-9d4f-4f49-8dbe-6b623b8a8223@c58g2000hsc.googlegroups.com> <887fc0a7-0a5a-4d2e-a9ea-eb9e32d6a818@m36g2000hse.googlegroups.com> <13a2f4f0-6ec1-4570-b6bf-1621cfb32db2@a2g2000prm.googlegroups.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Message-ID: NNTP-Posting-Host: 68.94.45.251 X-Complaints-To: abuse@prodigy.net X-Trace: nlpi061.nbdc.sbc.com 1216339337 ST000 68.94.45.251 (Thu, 17 Jul 2008 20:02:17 EDT) NNTP-Posting-Date: Thu, 17 Jul 2008 20:02:17 EDT X-UserInfo1: OPXQBWCFYZRURQX[ZBCBNWX@RJ_XPDLMN@GZ_GYO^ZUDUWYAKVUOPCW[ML\JXUCKVFDYZKBMSFX^OMSAFNTINTDDMVW[X\THOPXZRVOCJTUTPC\_JSBVX\KAOTBAJBVMZTYAKMNLDI_MFDSSOLXINH__FS^\WQGHGI^C@E[A_CF\AQLDQ\BTMPLDFNVUQ_VM Date: Thu, 17 Jul 2008 19:02:08 -0500 Xref: g2news1.google.com comp.lang.ada:1205 comp.lang.c:9850 Date: 2008-07-17T19:02:08-05:00 List-Id: Chris Thomasson wrote: > "Paul Hsieh" wrote in message > news:13a2f4f0-6ec1-4570-b6bf-1621cfb32db2@a2g2000prm.googlegroups.com... > On Jul 14, 4:49 am, Nick Keighley > wrote: > >> > On 14 Jul, 12:18, "jhc0...@gmail.com" wrote: >> > >> > > Interesting article I came across on Slashdot: >> > >> > >http://developers.slashdot.org/developers/08/07/10/213211.shtml >> > >> > > They are using C at JPL to program Mars Lander and just about >> > > everything now! Not Ada. Anyone got an explanation? I wonder also, do >> > > they really mean C++ when they say C. In my experience, this is a >> > > frequent, although disagreeable usage. >> > >> > contrary to popular expectations space probes are very >> > conservative in their use of technology. Processors are old >> > (and hence proven) memories are small (less vulnerable to radiation). > > >> Indeed. Ada is used by the military, because they have much more >> sophisticated hardware in tanks and fighter jets. > > > Is this a trolling attempt? Anyway, the military uses C++ for all critical > system software in state-of-the-art fighter-bombers because they have much > more sophisticated hardware: > > http://www.research.att.com/~bs/JSF-AV-rules.pdf > > http://www.ldra.co.uk/nologindownload.asp?id=52 It has very little to do with the "sophistication of the hardware". > > :^/ > > > > >> I would expect that >> perhaps NASA also uses it for the space shuttle. > > > [...] -- Gary Scott mailto:garylscott@sbcglobal dot net Fortran Library: http://www.fortranlib.com Support the Original G95 Project: http://www.g95.org -OR- Support the GNU GFortran Project: http://gcc.gnu.org/fortran/index.html If you want to do the impossible, don't hire an expert because he knows it can't be done. -- Henry Ford