Gpc

gpc@gnu.de

5400 discussions

Re: Mingw [was GPC newbie]
by gerdunne＠eircom.net 31 Jan '02

31 Jan '02

Hi chief. I carried out all your instructions. Downloaded MinGW-1.1.tar. I got a bit further but now I have a new problem. When I 'GPC *.pas -o *.exe ' I get 'ld: cannot find -lgpc' and when I do the GPC.EXE --verbose I get the following:- C:\>gpc.exe --verbose Using builtin specs. gpc version 19990118, based on egcs-2.91.60 19981201 (egcs-1.1.1 release) ld \lib\crt1.o -L\mingw32\lib -lgpc -lcrtdll -lmingw32 -lgcc -lmoldname -lcrtdl l -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc -lmoldname -lcrtdll ld: cannot find -lgpc C:\> My autoexec.bat Path is pointing at all the directories Any help would be appreciated. Regards Ger. african_chief(a)bigfoot.com wrote: < < BTW: you can get the full Mingw release from this URL: < http://sourceforge.net/project/showfiles.php?group_id=2435 < < < Best regards, The Chief < --------- < Prof. Abimbola Olowofoyeku (The African Chief) < Email: African_Chief(a)bigfoot.com < http://www.bigfoot.com/~african_chief/ <

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Re: How to Handle Variable Names in Both C and Pascal
by Gloria, Jing 30 Jan '02

30 Jan '02

Chuck F, thanks for the prompt response and for the utility that you sent. I will give it a try. I will have to FTP my files from the Solaris system to my desktop PC. Everyone, I apologize for any inconvenience that HTML in my mail may cause. I am using Microsoft Outlook and I have selected Plain Text format when composing my e-mail. I do not know why it is not turning off HTML. As I am typing out this e-mail, I see that it says "Plain Text" on the header. I hope HTML is turned off now. Regards, Jing

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How to Handle Variable Names in Both C and Pascal
by Gloria, Jing 30 Jan '02

30 Jan '02

I would appreciate getting suggestions on how to approach the following situation. As mentioned in previous messages to this group, I am porting code from SPARC/Sun_OS/Sun_compilers (development and runtime) to Intel/Solaris_7/GNU_compilers (also development and runtime). Source code are in C, C++, and Pascal. One requirement is to keep the source code so that it can be built in either platforms. I have used #ifdef/#else/#endif with asmname and wrapper functions/ subroutines to handle this. My problem is with several global variables. For example, I have one called "emulator_error" and it is used in 250 files with around 100 in C and 150 in Pascal source files. Is there a way to avoid editing all 150 Pascal files to put the #ifdef/#else/#endif with asmname directive? I believe writing a script to do this will be complicated since the variable names can be declared in a line where several variables are declared. For example: Var test_val, emulator_error, sum : integer; and only emulator_error is used in both C and Pascal; test_val and sum are referenced in Pascal source code only. Regards, Jing Gloria Texas Instruments Sherman, Texas

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Complex_Arctan
by Emil Jerabek 29 Jan '02

29 Jan '02

Hi all, I've had a look at the complex arctangent function in the RTS. It turned out that - it raises a runtime error or returns an infinite imaginary part on arguments too close to the singularities +/- i, for example ArcTan (Cmplx (1e6 * MinReal, +/- 1)) - it often returns a real number when it should return something with a small imaginary part instead (example: ArcTan (Cmplx (1e17, 1e17)) on IA32, YMMV), and in general, the imaginary part of the result is very unreliable when |Im (z)| << |Re (z)|^2 (because it is essentially computed as `Ln (something close to 1)'; example: Im (Arctan (Cmplx (1000, 0.0001))) gives 9.999989726e-11 instead of 9.999990000e-11, again this is machine-dependent) The following patch to p/rts/math.pas solves these problems (I hope it doesn't introduce others). ------------------------------ function Log1P (x: Real): Real; asmname 'log1p'; function Complex_Arctan (z: Complex): Complex; const Ln2 = 0.6931471805599453094172321214581765680755; var b, c, d: Real; begin c := Sqr (Re (z)); b := 1 - Abs (Im (z)); d := ((1 + Abs (Im (z))) * b - c) / 2; if Abs (b) > Abs (Re (z)) then b := Log1P (4 * (Abs (Im (z)) / b) / (b + Re (z) * (Re (z) / b))) / 4 else if c <= MinReal then b := (Ln2 - Ln (Abs (Re (z)))) / 2 else b := Log1P (4 * (Abs (Im (z)) / Re (z)) / (b * (b / Re (z)) + Re (z))) / 4; if Im (z) < 0 then b := -b; Complex_Arctan := Cmplx (ArcTan2 (Re (z), d) / 2, b) end; ------------------------ Emil Jerabek

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Re: Accessing Mailing List Mail - Newbie Questions
by da Silva, Joe 29 Jan '02

29 Jan '02

Please see below ... Joe. > -----Original Message----- > From: Frank Heckenbach [SMTP:frank@g-n-u.de] > Sent: Monday, January 21, 2002 2:39 AM > To: gpc(a)gnu.de > Subject: Re: Accessing Mailing List Mail - Newbie Questions > > Gloria, Jing wrote: > > > I am able to get to the mailing list archives thru my > > Web browser. I have also registered to subscribe to > > this mailing list. Pls point me to any documentation > > on how to use this system. > > There's none available. I thought it was more or less > slef-explaining. > > Or rather, as they say, the best documentation is the source which > can be found at http://fjf.gnu.de/crystal/. :-) > > > On the Web page, I can read the mail that have been > > submitted using the link from the GPC documentation. > > > > 1. How do I reply to a particular mail? There is no > > option to reply to the entry that I am reading. > > No, I haven't enabled this feature yet. It's mostly a policy > decision. We don't want anonymous replies on the list (and it might > also create another entry for spammers, though I'm not sure how many > spammers try to exploit web interfaces yet). And since the archive > (technically) independent of the list distribution, we'd have to do > a parallel user management (including passwords) for the archive. > > > 2. I sometimes see a section in the page that says > > "Reply to" with a list of previous messages. However, > > if I click on a mail entry in the list, that particular > > mail entry is displayed. > > Yes, this means as much as "The present mail is a reply to the > following mails". If you have a better idea how to name it, let me > know. > [Joe da Silva] How about "In reply to" ? > > 3. There is a login button at the end of the page for > > registered Crystal users. Do I need to register before > > I can reply to the mail in the mailing list? > > Registration is currently only used for administrators, but I don't > think it would be a problem to make it available for other users as > well. I didn't expect anyone to want to reply via this way, so I > didn't provide this options yet, but if there's some interest ... > > I'd like to know if anyone else is interested, so I can decide if I > should do the registrations manually or set up an automated system > (if there are many) ... > [Joe da Silva] I for one, only use it for reading messages. > Frank > > -- > Frank Heckenbach, frank(a)g-n-u.de, http://fjf.gnu.de/, 7977168E > GPC To-Do list, latest features, fixed bugs: > http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html

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GPC newbie
by gerdunne＠eircom.net 28 Jan '02

28 Jan '02

My OS = Win 95 I've installed MINGW32 and the GPC and have adjusted the Autoexec.bat parameters. I can execute the command 'GPC -v' and I get the correct responce. When I try to compile a *.pas prog. I get: - "GPC.exe: installation problem, cannot exe 'as': No such file or directory." I have downloaded the binutils. (a) The './configure make' command won't work for me. (b) I, not sure I've unziped to the right directory. (C) Do i have to configure my autoexec.bat for binutils? Any help would be greatly appreciated. Thanks Ger.

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pow
by Emil Jerabek 27 Jan '02

27 Jan '02

(I'm surprised a bit that nobody noticed this before.) The complex "pow" operator gives completely bogus results with negative exponents. Example: [artax:pascal]% cat tst.pas program Foo (Output); var z: Complex; begin z := Cmplx (5, 0) pow (-1); WriteLn (Re (z) : 5 : 1, Im (z) : 5 : 1) end. [artax:pascal]% gpc tst.pas [artax:pascal]% ./a.out 1.0 0.0 The "Complex_Pow" function in rts/math.pas computes reciprocals as 1 / (x+iy) := (x-iy) / |x+iy|, which is a nonsense. Here is a patch (recycling a Maurice's idea to make it work for too big or too small arguments). ---------------------------------------- function Complex_Pow (z: Complex; y: Integer) = r: Complex; var a, b: Real; begin if y < 0 then begin if Abs (Re (z)) > Abs (Im (z)) then begin a := Im (z) / Re (z); b := Re (z) + Im (z) * a; z := Cmplx (1 / b, -a / b) end else begin if Im (z) = 0 then begin SetReturnAddress (ReturnAddress (0)); RuntimeError (706); { Executed `x pow y' when complex x is zero and y < 0 } RestoreReturnAddress end; a := Re (z) / Im (z); b := Re (z) * a + Im (z); z := Cmplx (a / b, -1 / b); end; y := - y end; r := 1; while y <> 0 do begin if Odd (y) then r := r * z; y := y shr 1; if y <> 0 then z := Sqr (z) end end; ------------------------------------- BTW, are there any serious reasons why the complex "**" operator accepts only _real_ exponents? As far as the RTS is concerned, it would suffice to change "Double" to "Complex" in the declaration of "Complex_Power", but I expect that it needs some compiler magic as well. Emil Jerabek

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Accessing Mailing List Mail - Newbie Questions
by Gloria, Jing 26 Jan '02

26 Jan '02

I am able to get to the mailing list archives thru my Web browser. I have also registered to subscribe to this mailing list. Pls point me to any documentation on how to use this system. On the Web page, I can read the mail that have been submitted using the link from the GPC documentation. 1. How do I reply to a particular mail? There is no option to reply to the entry that I am reading. 2. I sometimes see a section in the page that says "Reply to" with a list of previous messages. However, if I click on a mail entry in the list, that particular mail entry is displayed. 3. There is a login button at the end of the page for registered Crystal users. Do I need to register before I can reply to the mail in the mailing list? Regards, Jing Gloria Texas Instruments Sherman, Texas

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test summaries for gpc-2.1 RC2 on Linux
by Matthias Klose 25 Jan '02

25 Jan '02

Attached you find the test summaries for RC2, based on Debian's gcc-2.95.4 compiler. For alpha it looks like the newly built gpc.pas cannount be found. Note that all compilers are built with srcdir != builddir.

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help: invoking Pexecute problem
by Tam Pikey 22 Jan '02

22 Jan '02

Hi We're having a problem when compiling while trying to use pexec. I'm looking for suggestions/fixes if anyone has one? The compile error is: ------------------------ [09:44:46] sdis:~/sdis >gpc sort.pas sort.pas: In function `program_Sort': sort.pas:11: undeclared identifier `Pexecute' (first use this function) sort.pas:11: (Each undeclared identifier is reported only once sort.pas:11: for each function it appears in.) sort.pas:12: undeclared identifier `Pexecute_one' (first use this function) sort.pas:12: undeclared identifier `Pexecute_search' (first use this function) sort.pas:12: undeclared identifier `Pexecute_verbose' (first use this function) [09:44:55] sdis:~/sdis > My versions are: ------------------------ [09:23:29] root:~ >gpc -v Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.7/2.8.1/specs gpc version 19990118, based on gcc-2.8.1 [09:23:32] root:~ >gcc -v Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.7/2.95.2/specs gcc version 2.95.2 19991024 (release) [09:23:39] root:~ > Sitting on an Ultra 10 Sparc running Solaris 2.7 tam axtlp(a)uaa.alaska.edu

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