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issues with ginac-1.6.0
by PG CLARK 25 May '11

25 May '11

this is probably me having installed the new library wrong but when I run my newly compiled program I get this error message ./main: error while loading shared libraries: libginac.so.2: cannot open shared object file: No such file or directory any ideas what might be the problem? I ran the make check after installing and it passed fine? regards peter clark ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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Re: [GiNaC-list] issues with ginac-1.6.0
by PG CLARK 25 May '11

25 May '11

Please disregard that. It was a bug in ubuntu 11 that just got fixed. That's the good news. Bad news is my program still gets killed for over use of ram and swap space. Are you really sure 1.6.0 has the improvement to simplified index in them? Tell me do we have an algorithm for taking 2 symetry trees acting on the same indexes and merging them to create one with the symetrys of both? If we had that I'm pretty sure I could write a far more efficient simplification algorithm. Quoting Stephen Montgomery-Smith <stephen(a)missouri.edu>: > You probably need to do > > sudo ldconfig > > PG CLARK wrote: >> Sorry thats a school boy error yes I'm running ubuntu 11.4, kernal >> 2.6.38-8-generic, gnome 2.32.1 (yes most of this isn't relevant but >> I'm going for completeness) >> >> 1.9GiB ram, AMD Athlon 64 X2 dual core processor >> >> ginac 1.6.0 was installed with the standard install commands included >> in the install file >> ./configure >> make >> sudo make install >> make check >> >> all tests passed >> >> my terminal after I tried ldconfig looked like this. >> >> peter@peter-ubuntu:~$ man ldconfig >> peter@peter-ubuntu:~$ ldconfig >> /sbin/ldconfig.real: Can't create temporary cache file >> /etc/ld.so.cache~: Permission denied >> peter@peter-ubuntu:~$ cd Documents >> peter@peter-ubuntu:~/Documents$ gcc main.cpp -o main -lcln -lginac >> peter@peter-ubuntu:~/Documents$ ./main >> ./main: error while loading shared libraries: libginac.so.2: cannot >> open shared object file: No such file or directory >> >> For give me but prior to using this system all I did was a bit of >> darwin tinkering and before that MS-dos. I'm not too clear on the >> specifics of how linux handles it's libraries. >> >> Quoting "Richard B. Kreckel"<kreckel(a)ginac.de>: >> >> >>> You didn't tell us about your system or how and where you installed >>> the library. Buy maybe you do have to run ldconfig? >>> >>> -richy. >>> -- >>> Richard B. Kreckel >>> <http://www.ginac.de/~kreckel/> >>> _______________________________________________ >>> GiNaC-list mailing list >>> GiNaC-list(a)ginac.de >>> https://www.cebix.net/mailman/listinfo/ginac-list >>> >>> >> >> >> ---------------------------------------------------------------- >> This message was sent using IMP, the Internet Messaging Program. >> >> >> _______________________________________________ >> GiNaC-list mailing list >> GiNaC-list(a)ginac.de >> https://www.cebix.net/mailman/listinfo/ginac-list >> >> >> >> > > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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Release 1.6.0
by Jens Vollinga 22 May '11

22 May '11

Hi everybody, GiNaC 1.6.0 is out and available. You can find the changes at the end of this email. Note: This release is not binary compatible to the previous one. Also, we changed the name of the library filename from libginac-1.5 to libginac. The ABI versioning is now done in recommended libtool manner. The dynamic library will be created as libginac.so.2.0.0 this time. We also stopped to create extra branches in the repository for ABI compatible versions. The latest releases will from now on always be in master. Changes: * Fixed compilation issues with clang. * Fixed compilation issues with VC++. * Fixed a segfault in fsolve() and improved its numerical algorithm. * Fixed several memory leaks in power::eval(). * Fixed the substitution algorithm that led to wrong results (exp(log(x))->x). * Fixed a bug in add:eval() (real_part() had returned wrong results). * Fixed infinite loop bug when unarchiving realsymbol and possymbol. * Fixed bugs in the GCD code. * Fixed empty string bug in symbol::get_name(). * Fixed bugs concerning STL vector sizes that can potentially cause segfaults. * Fixed a bug in is_polynomial(). * Removed autogen dependencies. * Improved simplify_indexed() algorithm. * Changed the connection between library version and package version. * power::series() can handle now more expressions with singularities in the exponent. * Added conjugate() methods to functions cosh, sinh, tanh. As always, this release can be downloaded from http://www.ginac.de/Download.html Best wishes, Jens

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is_polynomial gives strange results
by Florent Hivert 20 May '11

20 May '11

Hi there, I'm a regular user of GiNaC through PyNaC and Sage and I'm usually very happy with it. Good work guys ! However during on of my class I was quite surprised by a result from Sage. I've been able to trace back the result to GiNaC so I'd like to report it here. Note that it's the first time I go into the arcane of GiNaC so I may be wrong. Here is a code that reproduce the problem: #include <iostream> #include <ginac/ginac.h> using namespace std; using namespace GiNaC; int main() { symbol x("x"); ex poly; poly = sqrt(x*x+1)*sqrt(x+1); cout << poly << endl; cout << poly.is_polynomial(x) << endl; return 0; } The output is: popcorn-*/Sage-Work/GiNaC $ ./ginac sqrt(1+x)*sqrt(1+x^2) 1 so that sqrt(1+x)*sqrt(1+x^2) is considered as a polynomial in x ! Here are the standard info: I just installed cln-1.3.2.tar.bz2 and ginac-1.5.8.tar.bz2 from the sources. I'm using: popcorn-~/install $ c++ --version c++ (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292] In a popcorn-~/install $ uname -a Linux popcorn.rouba.net 2.6.34.7-0.7-desktop #1 SMP PREEMPT 2010-12-13 11:13:53 +0100 x86_64 x86_64 x86_64 GNU/Linux Cheers, Florent Hivert

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issues with simplify_indexed()
by PG CLARK 17 May '11

17 May '11

I've been trying to get a little program of mine to work and well it just doesn't terminate. Somewhere it gets snagged in an infinite loop in the library. I'm pretty sure this is a library bug and I've alerted development but in the mean while has an one encountered this before? Has any one figured out a work around? I've whittled my program down to the smallest most simple component I could get to non terminate. The code looks like this. #include <iostream> #include <ginac/ginac.h> using namespace std; using namespace GiNaC; int main() { symbol i_sym("i"), j_sym("j"), k_sym("k"), l_sym("l"), m_sym("m"), n_sym("n"); idx i(i_sym, 2), j(j_sym, 2), k(k_sym, 2), l(l_sym, 2), m(m_sym, 2), n(n_sym, 2); symbol alpha_sym("\\alpha"), beta_sym("\\beta"), gamma_sym("\\gamma"); idx Va(alpha_sym, 3), Vb(beta_sym, 3), Vg(gamma_sym, 3); symbol U("U"), v("v"), h("h"); exvector IJKLMNVec; idx IJKLMNIA[] ={i, j, k, l, m, n}; IJKLMNVec.assign (IJKLMNIA,IJKLMNIA+6); ex myEx = (indexed(h, IJKLMNVec)*indexed(U, i, Va) *indexed(U, k, Vb)*indexed(U, m, Vg)*indexed(v, j, Va) *indexed(v, l, Vb)*indexed(v, n, Vg)).simplify_indexed(); cout << myEx << endl; return 0; } This code never makes it to the cout code. it get trapped in a loop before then. Any one seen this before? ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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print methods for functions
by Luke 04 May '11

04 May '11

I would like to customize the latex printing of sin, cos, and tan to be more concise. For example, for an expression like sin(delta), instead of the default: \sin(\delta) I would like it to print: s_{\delta} I read section 6.3.2 in the documentation about print methods for functions, in which there was an example for the "abs()" function. I am confused about what needs to go in abs_eval and abs_evalf -- I tried to run that example and wasn't able to get it to compile. If I only want to change the latex printing for sin/cos/tan, but leave everything else the same as the default, what approach should I take? Should I just copy the code from inifcns_trans.cpp into my own, or is there a way to call REGISTER_FUNCTION in a simple way that only modifies the latex printing? ~Luke

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assignment
by Nisoli Isaia 30 Mar '11

30 Mar '11

Hello, it seems the error was given by the explicit destructor I wrote for the class rinterval, which I didn't attach in my first mail. Indeed, erasing from the code the destructor rinterval::~rinterval() { min.~numeric(); max.~numeric(); error.~numeric(); } the code works fine. Thank you, best regards Isaia On Wed, Mar 30, 2011 at 7:51 AM, <ginac-list-request(a)ginac.de> wrote: > Send GiNaC-list mailing list submissions to > ginac-list(a)ginac.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.cebix.net/mailman/listinfo/ginac-list > or, via email, send a message with subject or body 'help' to > ginac-list-request(a)ginac.de > > You can reach the person managing the list at > ginac-list-owner(a)ginac.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of GiNaC-list digest..." > > > Today's Topics: > > 1. Re: GiNaC-list Digest, Vol 69, Issue 3 (Nisoli Isaia) > 2. Re: assignment (Alexei Sheplyakov) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 29 Mar 2011 12:23:46 +0200 > From: Nisoli Isaia <nisoli(a)mail.dm.unipi.it> > To: ginac-list(a)ginac.de > Subject: Re: [GiNaC-list] GiNaC-list Digest, Vol 69, Issue 3 > Message-ID: <BANLkTinJO+gc8FWFAJaDvghxQeExB7eUVQ(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Dear Alexel, > even with your suggested correction, it gives exactly the same error. > I think the problem lies in some way in my assignment operator, when I use > the overloaded operator= of numeric. > > > rinterval& rinterval::operator=(const rinterval &rhs) > { > if (this == &rhs) return *this; // Same object? > else > { > try > { > this->min=rhs.min; > // I expect here the assignment operator of numeric to destroy the old > instance of min and create a new one > // but it seems like he simply slices rhs.min to fit into min, therefore > losing some information about the precision > // of rhs.min; I tried also this using the CLN library and, if I define min > as a cl_R and rhs.min is a cl_LF, when I come to this point > // it seems like the precision of min doesn't change, even if the precision > of rhs.min is bigger; > // I would like the assignment operator to destroy the former istance of min > and build a new one, but it doesn't seem to work > // I tried calling the destructors explictly, but it doesn't work either. > this->max=rhs.max; > error=rhs.error; > } > catch(std::exception & exc) > { > std:cerr << "Exception" << exc.what() << endl; > } > return *this; > } > } > > Best regards > Isaia > > On Tue, Mar 29, 2011 at 12:00 PM, <ginac-list-request(a)ginac.de> wrote: > >> Send GiNaC-list mailing list submissions to >> ginac-list(a)ginac.de >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://www.cebix.net/mailman/listinfo/ginac-list >> or, via email, send a message with subject or body 'help' to >> ginac-list-request(a)ginac.de >> >> You can reach the person managing the list at >> ginac-list-owner(a)ginac.de >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of GiNaC-list digest..." >> >> >> Today's Topics: >> >> 1. assignment (Nisoli Isaia) >> 2. Re: assignment (Alexei Sheplyakov) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Mon, 28 Mar 2011 11:33:53 +0200 >> From: Nisoli Isaia <nisoli(a)mail.dm.unipi.it> >> To: ginac-list(a)ginac.de >> Subject: [GiNaC-list] assignment >> Message-ID: <BANLkTi=ebBvqzhPPdPiZGXfKatwgt64+fw(a)mail.gmail.com> >> Content-Type: text/plain; charset="iso-8859-1" >> >> Dear all, >> I have a problem with Ginac. >> I'm sorry if my question seems stupid, but I cannot solve the issue. >> >> So, I define a new class: >> >> class rinterval >> { >> public: >> numeric min; >> numeric max; >> numeric error; >> >> //Constructor >> rinterval(); >> rinterval(const numeric &, const numeric &, const numeric &); >> //Destructor >> ~rinterval(); >> //Friend >> friend const rinterval dynamic(const rinterval &); >> friend std::ostream &operator<< (std::ostream &os, const rinterval >> &inter) >> { >> return os << "[" << inter.min << "," << inter.max <<"], error = " << >> inter.error << endl; >> }; >> rinterval& operator=(const rinterval &rhs); >> }; >> >> The involved functions are these >> >> rinterval::rinterval(const numeric &input1, const numeric &input2, const >> numeric &miserr) >> { >> if (input1>input2) >> { >> min=input2; >> max=input1; >> } >> else >> { >> min=input1; >> max=input2; >> } >> error=miserr; >> } >> >> const rinterval dynamic(const rinterval &domain) >> { >> numeric a="1.47777777777777777777777777779999"; >> rinterval temp(a*domain.min,a*domain.max,domain.error); >> cout << temp; >> return temp; >> } >> >> rinterval& rinterval::operator=(const rinterval &rhs) >> { >> if (this == &rhs) return *this; // Same object? >> else >> { >> try >> { >> this->min=rhs.min; >> this->max=rhs.max; >> error=rhs.error; >> } >> catch(std::exception & exc) >> { >> std:cerr << "Exception" << exc.what() << endl; >> } >> return *this; >> } >> } >> >> Now, if inside the main I do >> >> int main (void) >> { >> numeric a(1,10); >> numeric b(2,10); >> rinterval inter(a,b,(numeric)0.00001); >> inter=dynamic(inter); >> cout << inter << endl; >> } >> >> I get the following error: >> *** glibc detected *** ./invmeasure.exe: invalid fastbin entry (free): >> 0x00000000008ec340 *** >> ======= Backtrace: ========= >> /lib/libc.so.6(+0x774b6)[0x7f2c9b11a4b6] >> /lib/libc.so.6(cfree+0x73)[0x7f2c9b120c83] >> /usr/lib/libcln.so.6(+0x6fa0d)[0x7f2c9ad91a0d] >> >> /usr/lib/libcln.so.6(_ZN3cln11print_floatERSoRKNS_20cl_print_float_flagsERKNS_4cl_FE+0x29)[0x7f2c9ad92d39] >> /usr/lib/libginac-1.5.so.0(+0x1ddb5b)[0x7f2c9bfbfb5b] >> >> /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC7numeric13print_numericERKNS_13print_contextEPKcS5_S5_S5_j+0x97)[0x7f2c9bfc0857] >> >> /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC7numeric8do_printERKNS_13print_contextEj+0x28)[0x7f2c9bfc0e48] >> >> /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC5basic14print_dispatchERKNS_10class_infoINS_24registered_class_optionsEEERKNS_13print_contextEj+0x18b)[0x7f2c9be6c62b] >> /usr/lib/libginac-1.5.so.0(_ZN5GiNaClsERSoRKNS_2exE+0x9e)[0x7f2c9bfe5c2e] >> ./invmeasure.exe[0x404261] >> ./invmeasure.exe[0x403808] >> /lib/libc.so.6(__libc_start_main+0xfe)[0x7f2c9b0c1d8e] >> ./invmeasure.exe[0x403439] >> ======= Memory map: ======== >> 00400000-00407000 r-xp 00000000 08:07 66333 >> /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe >> 00607000-00608000 r--p 00007000 08:07 66333 >> /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe >> 00608000-00609000 rw-p 00008000 08:07 66333 >> /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe >> 008c7000-00909000 rw-p 00000000 00:00 0 >> [heap] >> 7f2c94000000-7f2c94021000 rw-p 00000000 00:00 0 >> 7f2c94021000-7f2c98000000 ---p 00000000 00:00 0 >> 7f2c9a8be000-7f2c9a91d000 r-xp 00000000 08:07 1523786 >> /usr/lib/libgmp.so.3.5.2 >> 7f2c9a91d000-7f2c9ab1c000 ---p 0005f000 08:07 1523786 >> /usr/lib/libgmp.so.3.5.2 >> 7f2c9ab1c000-7f2c9ab1d000 r--p 0005e000 08:07 1523786 >> /usr/lib/libgmp.so.3.5.2 >> 7f2c9ab1d000-7f2c9ab1e000 rw-p 0005f000 08:07 1523786 >> /usr/lib/libgmp.so.3.5.2 >> 7f2c9ab1e000-7f2c9ab20000 r-xp 00000000 08:07 262984 >> /lib/libdl-2.12.1.so >> 7f2c9ab20000-7f2c9ad20000 ---p 00002000 08:07 262984 >> /lib/libdl-2.12.1.so >> 7f2c9ad20000-7f2c9ad21000 r--p 00002000 08:07 262984 >> /lib/libdl-2.12.1.so >> 7f2c9ad21000-7f2c9ad22000 rw-p 00003000 08:07 262984 >> /lib/libdl-2.12.1.so >> 7f2c9ad22000-7f2c9ae98000 r-xp 00000000 08:07 1549774 >> /usr/lib/libcln.so.6.0.1 >> 7f2c9ae98000-7f2c9b097000 ---p 00176000 08:07 1549774 >> /usr/lib/libcln.so.6.0.1 >> 7f2c9b097000-7f2c9b09b000 r--p 00175000 08:07 1549774 >> /usr/lib/libcln.so.6.0.1 >> 7f2c9b09b000-7f2c9b0a1000 rw-p 00179000 08:07 1549774 >> /usr/lib/libcln.so.6.0.1 >> 7f2c9b0a1000-7f2c9b0a3000 rw-p 00000000 00:00 0 >> 7f2c9b0a3000-7f2c9b21d000 r-xp 00000000 08:07 262821 >> /lib/libc-2.12.1.so >> 7f2c9b21d000-7f2c9b41c000 ---p 0017a000 08:07 262821 >> /lib/libc-2.12.1.so >> 7f2c9b41c000-7f2c9b420000 r--p 00179000 08:07 262821 >> /lib/libc-2.12.1.so >> 7f2c9b420000-7f2c9b421000 rw-p 0017d000 08:07 262821 >> /lib/libc-2.12.1.so >> 7f2c9b421000-7f2c9b426000 rw-p 00000000 00:00 0 >> 7f2c9b426000-7f2c9b43b000 r-xp 00000000 08:07 262222 >> /lib/libgcc_s.so.1 >> 7f2c9b43b000-7f2c9b63a000 ---p 00015000 08:07 262222 >> /lib/libgcc_s.so.1 >> 7f2c9b63a000-7f2c9b63b000 r--p 00014000 08:07 262222 >> /lib/libgcc_s.so.1 >> 7f2c9b63b000-7f2c9b63c000 rw-p 00015000 08:07 262222 >> /lib/libgcc_s.so.1 >> 7f2c9b63c000-7f2c9b6be000 r-xp 00000000 08:07 262828 >> /lib/libm-2.12.1.so >> 7f2c9b6be000-7f2c9b8bd000 ---p 00082000 08:07 262828 >> /lib/libm-2.12.1.so >> 7f2c9b8bd000-7f2c9b8be000 r--p 00081000 08:07 262828 >> /lib/libm-2.12.1.so >> 7f2c9b8be000-7f2c9b8bf000 rw-p 00082000 08:07 262828 >> /lib/libm-2.12.1.so >> 7f2c9b8bf000-7f2c9b9a7000 r-xp 00000000 08:07 1523946 >> /usr/lib/libstdc++.so.6.0.14 >> 7f2c9b9a7000-7f2c9bba6000 ---p 000e8000 08:07 1523946 >> /usr/lib/libstdc++.so.6.0.14 >> 7f2c9bba6000-7f2c9bbae000 r--p 000e7000 08:07 1523946 >> /usr/lib/libstdc++.so.6.0.14 >> 7f2c9bbae000-7f2c9bbb0000 rw-p 000ef000 08:07 1523946 >> /usr/lib/libstdc++.so.6.0.14 >> 7f2c9bbb0000-7f2c9bbc5000 rw-p 00000000 00:00 0 >> 7f2c9bbc5000-7f2c9bbdd000 r-xp 00000000 08:07 262823 >> /lib/libpthread-2.12.1.so >> 7f2c9bbdd000-7f2c9bddc000 ---p 00018000 08:07 262823 >> /lib/libpthread-2.12.1.so >> 7f2c9bddc000-7f2c9bddd000 r--p 00017000 08:07 262823 >> /lib/libpthread-2.12.1.so >> 7f2c9bddd000-7f2c9bdde000 rw-p 00018000 08:07 262823 >> /lib/libpthread-2.12.1.so >> 7f2c9bdde000-7f2c9bde2000 rw-p 00000000 00:00 0 >> 7f2c9bde2000-7f2c9c0c1000 r-xp 00000000 08:07 1524595 >> /usr/lib/libginac-1.5.so.0.2.0 >> 7f2c9c0c1000-7f2c9c2c0000 ---p 002df000 08:07 1524595 >> /usr/lib/libginac-1.5.so.0.2.0 >> 7f2c9c2c0000-7f2c9c2cc000 r--p 002de000 08:07 1524595 >> /usr/lib/libginac-1.5.so.0.2.0 >> 7f2c9c2cc000-7f2c9c2cd000 rw-p 002ea000 08:07 1524595 >> /usr/lib/libginac-1.5.so.0.2.0 >> 7f2c9c2cd000-7f2c9c2cf000 rw-p 00000000 00:00 0 >> 7f2c9c2cf000-7f2c9c2ef000 r-xp 00000000 08:07 262975 >> /lib/ld-2.12.1.so >> 7f2c9c4c3000-7f2c9c4ca000 rw-p 00000000 00:00 0 >> 7f2c9c4ec000-7f2c9c4ef000 rw-p 00000000 00:00 0 >> 7f2c9c4ef000-7f2c9c4f0000 r--p 00020000 08:07 262975 >> /lib/ld-2.12.1.so >> 7f2c9c4f0000-7f2c9c4f1000 rw-p 00021000 08:07 262975 >> /lib/ld-2.12.1.so >> 7f2c9c4f1000-7f2c9c4f2000 rw-p 00000000 00:00 0 >> 7fff794fd000-7fff7951e000 rw-p 00000000 00:00 0 >> [stack] >> 7fff795c7000-7fff795c8000 r-xp 00000000 00:00 0 >> [vdso] >> ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 >> [vsyscall] >> >> I don't understand why, isn't the destruction of the old instances of min >> and max done by the assignment operator for the type numeric? >> >> Thank you in advance >> Isaia >>

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Re: [GiNaC-list] GiNaC-list Digest, Vol 69, Issue 3
by Nisoli Isaia 30 Mar '11

30 Mar '11

Dear Alexel, even with your suggested correction, it gives exactly the same error. I think the problem lies in some way in my assignment operator, when I use the overloaded operator= of numeric. rinterval& rinterval::operator=(const rinterval &rhs) { if (this == &rhs) return *this; // Same object? else { try { this->min=rhs.min; // I expect here the assignment operator of numeric to destroy the old instance of min and create a new one // but it seems like he simply slices rhs.min to fit into min, therefore losing some information about the precision // of rhs.min; I tried also this using the CLN library and, if I define min as a cl_R and rhs.min is a cl_LF, when I come to this point // it seems like the precision of min doesn't change, even if the precision of rhs.min is bigger; // I would like the assignment operator to destroy the former istance of min and build a new one, but it doesn't seem to work // I tried calling the destructors explictly, but it doesn't work either. this->max=rhs.max; error=rhs.error; } catch(std::exception & exc) { std:cerr << "Exception" << exc.what() << endl; } return *this; } } Best regards Isaia On Tue, Mar 29, 2011 at 12:00 PM, <ginac-list-request(a)ginac.de> wrote: > Send GiNaC-list mailing list submissions to > ginac-list(a)ginac.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.cebix.net/mailman/listinfo/ginac-list > or, via email, send a message with subject or body 'help' to > ginac-list-request(a)ginac.de > > You can reach the person managing the list at > ginac-list-owner(a)ginac.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of GiNaC-list digest..." > > > Today's Topics: > > 1. assignment (Nisoli Isaia) > 2. Re: assignment (Alexei Sheplyakov) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 28 Mar 2011 11:33:53 +0200 > From: Nisoli Isaia <nisoli(a)mail.dm.unipi.it> > To: ginac-list(a)ginac.de > Subject: [GiNaC-list] assignment > Message-ID: <BANLkTi=ebBvqzhPPdPiZGXfKatwgt64+fw(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Dear all, > I have a problem with Ginac. > I'm sorry if my question seems stupid, but I cannot solve the issue. > > So, I define a new class: > > class rinterval > { > public: > numeric min; > numeric max; > numeric error; > > //Constructor > rinterval(); > rinterval(const numeric &, const numeric &, const numeric &); > //Destructor > ~rinterval(); > //Friend > friend const rinterval dynamic(const rinterval &); > friend std::ostream &operator<< (std::ostream &os, const rinterval > &inter) > { > return os << "[" << inter.min << "," << inter.max <<"], error = " << > inter.error << endl; > }; > rinterval& operator=(const rinterval &rhs); > }; > > The involved functions are these > > rinterval::rinterval(const numeric &input1, const numeric &input2, const > numeric &miserr) > { > if (input1>input2) > { > min=input2; > max=input1; > } > else > { > min=input1; > max=input2; > } > error=miserr; > } > > const rinterval dynamic(const rinterval &domain) > { > numeric a="1.47777777777777777777777777779999"; > rinterval temp(a*domain.min,a*domain.max,domain.error); > cout << temp; > return temp; > } > > rinterval& rinterval::operator=(const rinterval &rhs) > { > if (this == &rhs) return *this; // Same object? > else > { > try > { > this->min=rhs.min; > this->max=rhs.max; > error=rhs.error; > } > catch(std::exception & exc) > { > std:cerr << "Exception" << exc.what() << endl; > } > return *this; > } > } > > Now, if inside the main I do > > int main (void) > { > numeric a(1,10); > numeric b(2,10); > rinterval inter(a,b,(numeric)0.00001); > inter=dynamic(inter); > cout << inter << endl; > } > > I get the following error: > *** glibc detected *** ./invmeasure.exe: invalid fastbin entry (free): > 0x00000000008ec340 *** > ======= Backtrace: ========= > /lib/libc.so.6(+0x774b6)[0x7f2c9b11a4b6] > /lib/libc.so.6(cfree+0x73)[0x7f2c9b120c83] > /usr/lib/libcln.so.6(+0x6fa0d)[0x7f2c9ad91a0d] > > /usr/lib/libcln.so.6(_ZN3cln11print_floatERSoRKNS_20cl_print_float_flagsERKNS_4cl_FE+0x29)[0x7f2c9ad92d39] > /usr/lib/libginac-1.5.so.0(+0x1ddb5b)[0x7f2c9bfbfb5b] > > /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC7numeric13print_numericERKNS_13print_contextEPKcS5_S5_S5_j+0x97)[0x7f2c9bfc0857] > > /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC7numeric8do_printERKNS_13print_contextEj+0x28)[0x7f2c9bfc0e48] > > /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC5basic14print_dispatchERKNS_10class_infoINS_24registered_class_optionsEEERKNS_13print_contextEj+0x18b)[0x7f2c9be6c62b] > /usr/lib/libginac-1.5.so.0(_ZN5GiNaClsERSoRKNS_2exE+0x9e)[0x7f2c9bfe5c2e] > ./invmeasure.exe[0x404261] > ./invmeasure.exe[0x403808] > /lib/libc.so.6(__libc_start_main+0xfe)[0x7f2c9b0c1d8e] > ./invmeasure.exe[0x403439] > ======= Memory map: ======== > 00400000-00407000 r-xp 00000000 08:07 66333 > /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe > 00607000-00608000 r--p 00007000 08:07 66333 > /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe > 00608000-00609000 rw-p 00008000 08:07 66333 > /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe > 008c7000-00909000 rw-p 00000000 00:00 0 > [heap] > 7f2c94000000-7f2c94021000 rw-p 00000000 00:00 0 > 7f2c94021000-7f2c98000000 ---p 00000000 00:00 0 > 7f2c9a8be000-7f2c9a91d000 r-xp 00000000 08:07 1523786 > /usr/lib/libgmp.so.3.5.2 > 7f2c9a91d000-7f2c9ab1c000 ---p 0005f000 08:07 1523786 > /usr/lib/libgmp.so.3.5.2 > 7f2c9ab1c000-7f2c9ab1d000 r--p 0005e000 08:07 1523786 > /usr/lib/libgmp.so.3.5.2 > 7f2c9ab1d000-7f2c9ab1e000 rw-p 0005f000 08:07 1523786 > /usr/lib/libgmp.so.3.5.2 > 7f2c9ab1e000-7f2c9ab20000 r-xp 00000000 08:07 262984 > /lib/libdl-2.12.1.so > 7f2c9ab20000-7f2c9ad20000 ---p 00002000 08:07 262984 > /lib/libdl-2.12.1.so > 7f2c9ad20000-7f2c9ad21000 r--p 00002000 08:07 262984 > /lib/libdl-2.12.1.so > 7f2c9ad21000-7f2c9ad22000 rw-p 00003000 08:07 262984 > /lib/libdl-2.12.1.so > 7f2c9ad22000-7f2c9ae98000 r-xp 00000000 08:07 1549774 > /usr/lib/libcln.so.6.0.1 > 7f2c9ae98000-7f2c9b097000 ---p 00176000 08:07 1549774 > /usr/lib/libcln.so.6.0.1 > 7f2c9b097000-7f2c9b09b000 r--p 00175000 08:07 1549774 > /usr/lib/libcln.so.6.0.1 > 7f2c9b09b000-7f2c9b0a1000 rw-p 00179000 08:07 1549774 > /usr/lib/libcln.so.6.0.1 > 7f2c9b0a1000-7f2c9b0a3000 rw-p 00000000 00:00 0 > 7f2c9b0a3000-7f2c9b21d000 r-xp 00000000 08:07 262821 > /lib/libc-2.12.1.so > 7f2c9b21d000-7f2c9b41c000 ---p 0017a000 08:07 262821 > /lib/libc-2.12.1.so > 7f2c9b41c000-7f2c9b420000 r--p 00179000 08:07 262821 > /lib/libc-2.12.1.so > 7f2c9b420000-7f2c9b421000 rw-p 0017d000 08:07 262821 > /lib/libc-2.12.1.so > 7f2c9b421000-7f2c9b426000 rw-p 00000000 00:00 0 > 7f2c9b426000-7f2c9b43b000 r-xp 00000000 08:07 262222 > /lib/libgcc_s.so.1 > 7f2c9b43b000-7f2c9b63a000 ---p 00015000 08:07 262222 > /lib/libgcc_s.so.1 > 7f2c9b63a000-7f2c9b63b000 r--p 00014000 08:07 262222 > /lib/libgcc_s.so.1 > 7f2c9b63b000-7f2c9b63c000 rw-p 00015000 08:07 262222 > /lib/libgcc_s.so.1 > 7f2c9b63c000-7f2c9b6be000 r-xp 00000000 08:07 262828 > /lib/libm-2.12.1.so > 7f2c9b6be000-7f2c9b8bd000 ---p 00082000 08:07 262828 > /lib/libm-2.12.1.so > 7f2c9b8bd000-7f2c9b8be000 r--p 00081000 08:07 262828 > /lib/libm-2.12.1.so > 7f2c9b8be000-7f2c9b8bf000 rw-p 00082000 08:07 262828 > /lib/libm-2.12.1.so > 7f2c9b8bf000-7f2c9b9a7000 r-xp 00000000 08:07 1523946 > /usr/lib/libstdc++.so.6.0.14 > 7f2c9b9a7000-7f2c9bba6000 ---p 000e8000 08:07 1523946 > /usr/lib/libstdc++.so.6.0.14 > 7f2c9bba6000-7f2c9bbae000 r--p 000e7000 08:07 1523946 > /usr/lib/libstdc++.so.6.0.14 > 7f2c9bbae000-7f2c9bbb0000 rw-p 000ef000 08:07 1523946 > /usr/lib/libstdc++.so.6.0.14 > 7f2c9bbb0000-7f2c9bbc5000 rw-p 00000000 00:00 0 > 7f2c9bbc5000-7f2c9bbdd000 r-xp 00000000 08:07 262823 > /lib/libpthread-2.12.1.so > 7f2c9bbdd000-7f2c9bddc000 ---p 00018000 08:07 262823 > /lib/libpthread-2.12.1.so > 7f2c9bddc000-7f2c9bddd000 r--p 00017000 08:07 262823 > /lib/libpthread-2.12.1.so > 7f2c9bddd000-7f2c9bdde000 rw-p 00018000 08:07 262823 > /lib/libpthread-2.12.1.so > 7f2c9bdde000-7f2c9bde2000 rw-p 00000000 00:00 0 > 7f2c9bde2000-7f2c9c0c1000 r-xp 00000000 08:07 1524595 > /usr/lib/libginac-1.5.so.0.2.0 > 7f2c9c0c1000-7f2c9c2c0000 ---p 002df000 08:07 1524595 > /usr/lib/libginac-1.5.so.0.2.0 > 7f2c9c2c0000-7f2c9c2cc000 r--p 002de000 08:07 1524595 > /usr/lib/libginac-1.5.so.0.2.0 > 7f2c9c2cc000-7f2c9c2cd000 rw-p 002ea000 08:07 1524595 > /usr/lib/libginac-1.5.so.0.2.0 > 7f2c9c2cd000-7f2c9c2cf000 rw-p 00000000 00:00 0 > 7f2c9c2cf000-7f2c9c2ef000 r-xp 00000000 08:07 262975 > /lib/ld-2.12.1.so > 7f2c9c4c3000-7f2c9c4ca000 rw-p 00000000 00:00 0 > 7f2c9c4ec000-7f2c9c4ef000 rw-p 00000000 00:00 0 > 7f2c9c4ef000-7f2c9c4f0000 r--p 00020000 08:07 262975 > /lib/ld-2.12.1.so > 7f2c9c4f0000-7f2c9c4f1000 rw-p 00021000 08:07 262975 > /lib/ld-2.12.1.so > 7f2c9c4f1000-7f2c9c4f2000 rw-p 00000000 00:00 0 > 7fff794fd000-7fff7951e000 rw-p 00000000 00:00 0 > [stack] > 7fff795c7000-7fff795c8000 r-xp 00000000 00:00 0 > [vdso] > ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 > [vsyscall] > > I don't understand why, isn't the destruction of the old instances of min > and max done by the assignment operator for the type numeric? > > Thank you in advance > Isaia >

2 1

assignment
by Nisoli Isaia 28 Mar '11

28 Mar '11

Dear all, I have a problem with Ginac. I'm sorry if my question seems stupid, but I cannot solve the issue. So, I define a new class: class rinterval { public: numeric min; numeric max; numeric error; //Constructor rinterval(); rinterval(const numeric &, const numeric &, const numeric &); //Destructor ~rinterval(); //Friend friend const rinterval dynamic(const rinterval &); friend std::ostream &operator<< (std::ostream &os, const rinterval &inter) { return os << "[" << inter.min << "," << inter.max <<"], error = " << inter.error << endl; }; rinterval& operator=(const rinterval &rhs); }; The involved functions are these rinterval::rinterval(const numeric &input1, const numeric &input2, const numeric &miserr) { if (input1>input2) { min=input2; max=input1; } else { min=input1; max=input2; } error=miserr; } const rinterval dynamic(const rinterval &domain) { numeric a="1.47777777777777777777777777779999"; rinterval temp(a*domain.min,a*domain.max,domain.error); cout << temp; return temp; } rinterval& rinterval::operator=(const rinterval &rhs) { if (this == &rhs) return *this; // Same object? else { try { this->min=rhs.min; this->max=rhs.max; error=rhs.error; } catch(std::exception & exc) { std:cerr << "Exception" << exc.what() << endl; } return *this; } } Now, if inside the main I do int main (void) { numeric a(1,10); numeric b(2,10); rinterval inter(a,b,(numeric)0.00001); inter=dynamic(inter); cout << inter << endl; } I get the following error: *** glibc detected *** ./invmeasure.exe: invalid fastbin entry (free): 0x00000000008ec340 *** ======= Backtrace: ========= /lib/libc.so.6(+0x774b6)[0x7f2c9b11a4b6] /lib/libc.so.6(cfree+0x73)[0x7f2c9b120c83] /usr/lib/libcln.so.6(+0x6fa0d)[0x7f2c9ad91a0d] /usr/lib/libcln.so.6(_ZN3cln11print_floatERSoRKNS_20cl_print_float_flagsERKNS_4cl_FE+0x29)[0x7f2c9ad92d39] /usr/lib/libginac-1.5.so.0(+0x1ddb5b)[0x7f2c9bfbfb5b] /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC7numeric13print_numericERKNS_13print_contextEPKcS5_S5_S5_j+0x97)[0x7f2c9bfc0857] /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC7numeric8do_printERKNS_13print_contextEj+0x28)[0x7f2c9bfc0e48] /usr/lib/libginac-1.5.so.0(_ZNK5GiNaC5basic14print_dispatchERKNS_10class_infoINS_24registered_class_optionsEEERKNS_13print_contextEj+0x18b)[0x7f2c9be6c62b] /usr/lib/libginac-1.5.so.0(_ZN5GiNaClsERSoRKNS_2exE+0x9e)[0x7f2c9bfe5c2e] ./invmeasure.exe[0x404261] ./invmeasure.exe[0x403808] /lib/libc.so.6(__libc_start_main+0xfe)[0x7f2c9b0c1d8e] ./invmeasure.exe[0x403439] ======= Memory map: ======== 00400000-00407000 r-xp 00000000 08:07 66333 /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe 00607000-00608000 r--p 00007000 08:07 66333 /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe 00608000-00609000 rw-p 00008000 08:07 66333 /home/isaia/Dropbox/HTGFL/GN-Comput_inv_1D/codice/invmeasure.exe 008c7000-00909000 rw-p 00000000 00:00 0 [heap] 7f2c94000000-7f2c94021000 rw-p 00000000 00:00 0 7f2c94021000-7f2c98000000 ---p 00000000 00:00 0 7f2c9a8be000-7f2c9a91d000 r-xp 00000000 08:07 1523786 /usr/lib/libgmp.so.3.5.2 7f2c9a91d000-7f2c9ab1c000 ---p 0005f000 08:07 1523786 /usr/lib/libgmp.so.3.5.2 7f2c9ab1c000-7f2c9ab1d000 r--p 0005e000 08:07 1523786 /usr/lib/libgmp.so.3.5.2 7f2c9ab1d000-7f2c9ab1e000 rw-p 0005f000 08:07 1523786 /usr/lib/libgmp.so.3.5.2 7f2c9ab1e000-7f2c9ab20000 r-xp 00000000 08:07 262984 /lib/libdl-2.12.1.so 7f2c9ab20000-7f2c9ad20000 ---p 00002000 08:07 262984 /lib/libdl-2.12.1.so 7f2c9ad20000-7f2c9ad21000 r--p 00002000 08:07 262984 /lib/libdl-2.12.1.so 7f2c9ad21000-7f2c9ad22000 rw-p 00003000 08:07 262984 /lib/libdl-2.12.1.so 7f2c9ad22000-7f2c9ae98000 r-xp 00000000 08:07 1549774 /usr/lib/libcln.so.6.0.1 7f2c9ae98000-7f2c9b097000 ---p 00176000 08:07 1549774 /usr/lib/libcln.so.6.0.1 7f2c9b097000-7f2c9b09b000 r--p 00175000 08:07 1549774 /usr/lib/libcln.so.6.0.1 7f2c9b09b000-7f2c9b0a1000 rw-p 00179000 08:07 1549774 /usr/lib/libcln.so.6.0.1 7f2c9b0a1000-7f2c9b0a3000 rw-p 00000000 00:00 0 7f2c9b0a3000-7f2c9b21d000 r-xp 00000000 08:07 262821 /lib/libc-2.12.1.so 7f2c9b21d000-7f2c9b41c000 ---p 0017a000 08:07 262821 /lib/libc-2.12.1.so 7f2c9b41c000-7f2c9b420000 r--p 00179000 08:07 262821 /lib/libc-2.12.1.so 7f2c9b420000-7f2c9b421000 rw-p 0017d000 08:07 262821 /lib/libc-2.12.1.so 7f2c9b421000-7f2c9b426000 rw-p 00000000 00:00 0 7f2c9b426000-7f2c9b43b000 r-xp 00000000 08:07 262222 /lib/libgcc_s.so.1 7f2c9b43b000-7f2c9b63a000 ---p 00015000 08:07 262222 /lib/libgcc_s.so.1 7f2c9b63a000-7f2c9b63b000 r--p 00014000 08:07 262222 /lib/libgcc_s.so.1 7f2c9b63b000-7f2c9b63c000 rw-p 00015000 08:07 262222 /lib/libgcc_s.so.1 7f2c9b63c000-7f2c9b6be000 r-xp 00000000 08:07 262828 /lib/libm-2.12.1.so 7f2c9b6be000-7f2c9b8bd000 ---p 00082000 08:07 262828 /lib/libm-2.12.1.so 7f2c9b8bd000-7f2c9b8be000 r--p 00081000 08:07 262828 /lib/libm-2.12.1.so 7f2c9b8be000-7f2c9b8bf000 rw-p 00082000 08:07 262828 /lib/libm-2.12.1.so 7f2c9b8bf000-7f2c9b9a7000 r-xp 00000000 08:07 1523946 /usr/lib/libstdc++.so.6.0.14 7f2c9b9a7000-7f2c9bba6000 ---p 000e8000 08:07 1523946 /usr/lib/libstdc++.so.6.0.14 7f2c9bba6000-7f2c9bbae000 r--p 000e7000 08:07 1523946 /usr/lib/libstdc++.so.6.0.14 7f2c9bbae000-7f2c9bbb0000 rw-p 000ef000 08:07 1523946 /usr/lib/libstdc++.so.6.0.14 7f2c9bbb0000-7f2c9bbc5000 rw-p 00000000 00:00 0 7f2c9bbc5000-7f2c9bbdd000 r-xp 00000000 08:07 262823 /lib/libpthread-2.12.1.so 7f2c9bbdd000-7f2c9bddc000 ---p 00018000 08:07 262823 /lib/libpthread-2.12.1.so 7f2c9bddc000-7f2c9bddd000 r--p 00017000 08:07 262823 /lib/libpthread-2.12.1.so 7f2c9bddd000-7f2c9bdde000 rw-p 00018000 08:07 262823 /lib/libpthread-2.12.1.so 7f2c9bdde000-7f2c9bde2000 rw-p 00000000 00:00 0 7f2c9bde2000-7f2c9c0c1000 r-xp 00000000 08:07 1524595 /usr/lib/libginac-1.5.so.0.2.0 7f2c9c0c1000-7f2c9c2c0000 ---p 002df000 08:07 1524595 /usr/lib/libginac-1.5.so.0.2.0 7f2c9c2c0000-7f2c9c2cc000 r--p 002de000 08:07 1524595 /usr/lib/libginac-1.5.so.0.2.0 7f2c9c2cc000-7f2c9c2cd000 rw-p 002ea000 08:07 1524595 /usr/lib/libginac-1.5.so.0.2.0 7f2c9c2cd000-7f2c9c2cf000 rw-p 00000000 00:00 0 7f2c9c2cf000-7f2c9c2ef000 r-xp 00000000 08:07 262975 /lib/ld-2.12.1.so 7f2c9c4c3000-7f2c9c4ca000 rw-p 00000000 00:00 0 7f2c9c4ec000-7f2c9c4ef000 rw-p 00000000 00:00 0 7f2c9c4ef000-7f2c9c4f0000 r--p 00020000 08:07 262975 /lib/ld-2.12.1.so 7f2c9c4f0000-7f2c9c4f1000 rw-p 00021000 08:07 262975 /lib/ld-2.12.1.so 7f2c9c4f1000-7f2c9c4f2000 rw-p 00000000 00:00 0 7fff794fd000-7fff7951e000 rw-p 00000000 00:00 0 [stack] 7fff795c7000-7fff795c8000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] I don't understand why, isn't the destruction of the old instances of min and max done by the assignment operator for the type numeric? Thank you in advance Isaia

2 1

Relations using possymbol
by Michael Boyer 23 Mar '11

23 Mar '11

I am confused by the behavior of possymbols in relations. Consider the following program: ------------------------------------------------ #include <ginac/ginac.h> using namespace GiNaC; int main() { possymbol x("x"); if (x.info(info_flags::positive)) std::cout << "x is positive\n"; else std::cout << "x is _not_ positive\n"; if (x > 0) std::cout << "x is greater than zero\n"; else std::cout << "x is _not_ greater than zero\n"; } ------------------------------------------------ I would expect the output to be: x is positive x is greater than zero But the output I get is: x is positive x is _not_ greater than zero Am I misunderstanding the use of possymbol? Thanks, Michael Boyer

2 4