* real numbers in ADA @ 1995-03-07 21:05 burghgraeve fabrice 1995-03-10 16:06 ` David Arno 0 siblings, 1 reply; 7+ messages in thread From: burghgraeve fabrice @ 1995-03-07 21:05 UTC (permalink / raw) hello . i'd like to have some informations about real numbers (type T is digits ....) (type T is delta .....) that i have to use in a maths program. Who can tell me if there is a good book about these types of datas. thank you... burghgra@ens.lifl.fr ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: real numbers in ADA 1995-03-07 21:05 real numbers in ADA burghgraeve fabrice @ 1995-03-10 16:06 ` David Arno 1995-03-10 23:02 ` Michael Feldman 0 siblings, 1 reply; 7+ messages in thread From: David Arno @ 1995-03-10 16:06 UTC (permalink / raw) In article <3jihrc$39n@netserver.univ-lille1.fr> burghgra@ens.lifl.fr "burghgraeve fabrice" writes: > hello . > i'd like to have some informations about real numbers > (type T is digits ....) > (type T is delta .....) > that i have to use in a maths program. > Who can tell me if there > is a good book about these types of datas. > The LRM is *the* book for any Ada related subject - assumming you can understand it of course, as it is a nightmare to read :-( -- David Arno ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: real numbers in ADA 1995-03-10 16:06 ` David Arno @ 1995-03-10 23:02 ` Michael Feldman 1995-03-10 23:38 ` Richard Kenner 0 siblings, 1 reply; 7+ messages in thread From: Michael Feldman @ 1995-03-10 23:02 UTC (permalink / raw) In article <794851577snz@linkmsd.com>, David Arno <davea@linkmsd.com> wrote: > >The LRM is *the* book for any Ada related subject - assumming you can >understand it of course, as it is a nightmare to read :-( As language standards go, Ada is about as good as I've ever seen, and I've seen a lot. _All_ language standards are good reference docs, but you can't use them as textbooks; they are very legalistic in nature. The Ada 95 and Ada 83 _Rationale_ documents, on the other hand, make good reading; they are discursive and give lots of good examples and insight into why features were desugned as they were. And of course, in the Ada case, these documents are all free on the net. Anyone who'd characterize the Ada LRM _per se_ as a "nightmare" to read, probably hasn't read the others. Most folks haven't read language standards, because they are expensive and, by nature, hard to read. Mike Feldman ------------------------------------------------------------------------ Michael B. Feldman - chair, SIGAda Education Working Group Professor, Dept. of Electrical Engineering and Computer Science The George Washington University - Washington, DC 20052 USA 202-994-5919 (voice) - 202-994-0227 (fax) - mfeldman@seas.gwu.edu (Internet) ------------------------------------------------------------------------ One, two, three ways an underdog: Ada fan, Mac fan, Old Liberal Democrat ------------------------------------------------------------------------ Ada on the WWW: http://lglwww.epfl.ch/Ada/ or http://info.acm.org/sigada/ ------------------------------------------------------------------------ ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: real numbers in ADA 1995-03-10 23:02 ` Michael Feldman @ 1995-03-10 23:38 ` Richard Kenner 1995-03-13 20:58 ` woodruff 1995-03-20 16:53 ` Richard G. Hash 0 siblings, 2 replies; 7+ messages in thread From: Richard Kenner @ 1995-03-10 23:38 UTC (permalink / raw) In article <3jqlq1$s02@felix.seas.gwu.edu> mfeldman@seas.gwu.edu (Michael Feldman) writes: >Anyone who'd characterize the Ada LRM _per se_ as a "nightmare" to read, >probably hasn't read the others. Most folks haven't read language standards, >because they are expensive and, by nature, hard to read. I've read the Ada 83 and Ada 95 LRMs. I learned Ada from the Ada 83 LRM, but certainly consider the Ada 95 LRM a "nightmare". I've also read the C standard and find it quite readable. The major problem with it, though, is that it never seems to contains answers to any of the questions I consult it for. ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: real numbers in ADA 1995-03-10 23:38 ` Richard Kenner @ 1995-03-13 20:58 ` woodruff 1995-03-15 15:34 ` Robert I. Eachus 1995-03-20 16:53 ` Richard G. Hash 1 sibling, 1 reply; 7+ messages in thread From: woodruff @ 1995-03-13 20:58 UTC (permalink / raw) >>>>> "Richard" == Richard Kenner <kenner@lab.ultra.nyu.edu> writes: In article <3jqnu0$3s9@cmcl2.NYU.EDU> kenner@lab.ultra.nyu.edu (Richard Kenner) writes: Richard> I've read the Ada 83 and Ada 95 LRMs. I learned Ada from Richard> the Ada 83 LRM, but certainly consider the Ada 95 LRM a Richard> "nightmare". I'm feeling better already! I have been having this same reaction to the Ada95 LRM, and was beginning to wonder if a) my memory has become selective since I learned Ada83 ("life sure was a lot easier then!") or b) a *lot* of cells have taken early retirement. I think the world is in greater need of quality Ada textbooks now than was the case a decade ago. -- John Woodruff Lawrence Livermore National Lab 510 422 4661 ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: real numbers in ADA 1995-03-13 20:58 ` woodruff @ 1995-03-15 15:34 ` Robert I. Eachus 0 siblings, 0 replies; 7+ messages in thread From: Robert I. Eachus @ 1995-03-15 15:34 UTC (permalink / raw) In article <WOODRUFF.95Mar13125852@tanana.llnl.gov> woodruff@tanana.llnl.gov writes: > I'm feeling better already! > I have been having this same reaction to the Ada95 LRM, and was > beginning to wonder if a) my memory has become selective since I learned > Ada83 ("life sure was a lot easier then!") or b) a *lot* of cells have > taken early retirement. > I think the world is in greater need of quality Ada textbooks now than > was the case a decade ago. "The fault dear Brutus is not in ourselves, but in our stars..." I don't think it is the fault of the new RM, but that in the process of extending the existing language, in many places we chose truth, beauty, upward compatibility, and functionality over ease of understanding. There are some VERY powerful tools in Ada 95, and I don't think anyone knows how best to use some of them. In fact I have convinced myself that many of the paradigms that will be commonly used in Ada 95 applications are significantly different from the "standard" object-oriented paradigms. (We just don't know what the new paradigms are yet. :-( To some extent the same phenomenon occured with Ada 83, but the parts of Ada 83 which were new to most programmers were isolated in chapters 9 (Tasking) and 12 (Generics). It was possible, in fact common, to teach Ada in three chunks: the Pascal subset (chapters 1 through 6 plus some I/O), the Pascal superset (add 7,8, and 11), and full Ada. In Ada 95, the same approach may be justified, but some of the new pieces are found in the heart of the manual, in chapter 3. Of course one way to do this is to teach the Ada 83 subset--Ada 83 with a few cosmetic extensions, then add tagged, controlled, protected and abstract types. -- Robert I. Eachus with Standard_Disclaimer; use Standard_Disclaimer; function Message (Text: in Clever_Ideas) return Better_Ideas is... ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: real numbers in ADA 1995-03-10 23:38 ` Richard Kenner 1995-03-13 20:58 ` woodruff @ 1995-03-20 16:53 ` Richard G. Hash 1 sibling, 0 replies; 7+ messages in thread From: Richard G. Hash @ 1995-03-20 16:53 UTC (permalink / raw) In <3jqnu0$3s9@cmcl2.NYU.EDU> kenner@lab.ultra.nyu.edu (Richard Kenner) writes: > I've also read the C standard and find it quite readable. The major > problem with it, though, is that it never seems to contains answers to > any of the questions I consult it for. For myself, at least, that qualifies it as a "nightmare", right there. -- Richard G. Hash email: rgh@shell.com Shell Development Company, Bellaire Research Center phone: (713) 245-7311 Member Team Ada Free Ada95 compilers: cs.nyu.edu:/pub/gnat Distributed, Full-OO, Multithreading, all built in. And it's free. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~1995-03-20 16:53 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 1995-03-07 21:05 real numbers in ADA burghgraeve fabrice 1995-03-10 16:06 ` David Arno 1995-03-10 23:02 ` Michael Feldman 1995-03-10 23:38 ` Richard Kenner 1995-03-13 20:58 ` woodruff 1995-03-15 15:34 ` Robert I. Eachus 1995-03-20 16:53 ` Richard G. Hash
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