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Re: [Boost-users] boost::math::tools ?
by Jesse Perla 13 Aug '08

13 Aug '08

> >You can google, e.g. > http://www.boost.org/doc/libs/1_35_0/libs/math/doc/sf_and_dist/html/math_to…>backgrounders/remez.html<http://www.boost.org/doc/libs/1_35_0/libs/math/doc/sf_and_dist/html/math_to…> > >Regards, >Olaf Thanks, Since I found these in the sandbox, I was worried that these were partially completed components that snuck into the build. So here are a few documentation organization suggestions that might clear up confusion: * If we follow the documentation down from the top level on boost, these were hard to find. For example, on the main math page: http://www.boost.org/doc/libs/1_35_0/libs/math/doc/html/index.html you need to go to the "Special Functions" section, which is named (properly) for all of the arctan, etc. and you wouldn't think it would have basic optimization/root finding/polynomials. The Special Functions section does link to the "Math Toolkit" which makes sense as a master name. * Perhaps the easiest solution would be to have another line in the "libraries" section on http://www.boost.org/doc/libs/1_35_0/libs/math/doc/html/index.html that mentions basic root finding/optimization and links to this same page But now that I see these pages say that these are in testing/development, I think my main question still stands: Are these (relatively) stable and usable or are they still at a pretty low level of completion? -Jesse

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Downloading boost 1.36
by Sean Farrow 13 Aug '08

13 Aug '08

Hi: Has boost 1.36 been pushed yet. If yes where is the download link? Cheers Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3351 (20080813) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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[1.36.0] Release packaging problems
by Beman Dawes 13 Aug '08

13 Aug '08

Grrr... 1.36.0 is up on SourceForge, but due to a screw-up on my part the .bz2 and .gz files don't include the generated docs. The .7z and .zip files do have the generated docs. The problem was caused by having to run some of the release process on Windows, some on Linux, and then combining the pieces by hand. That's a result of doc changes breaking the doc build on Windows. I'm going to be out of the office all day on non-Boost business, so won't get a chance to work on straightening out the mess until late today or tomorrow. --Beman

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[spirit] repeat_p parameters
by piotr270977＠interia.pl 13 Aug '08

13 Aug '08

Hi All I wonder about expression repeat_p parameter. int c; c=12; repeat_p(boost::ref(c)) is OK but what about repeat_p(boost::ref(c) - 1 ) ??? (compiling but not working correctly) The only solution I have found is int c, c1; c=12; c1 = c-1; repeat_p(boost::ref(c1)) Is it possible to insert an expression in repeat_p without c1 extra variable ? ---------------------------------------------------------------------- Podbij Dziki Zachod, wygraj laptopa lub iPoda >> http://link.interia.pl/f1ede

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boost::math::tools ?
by Jesse Perla 13 Aug '08

13 Aug '08

Poking around in the headers of 1.35 I found code: polynomial.hpp, roots, series, minima, remez, and a few others I would love to use. However, I don't see any mention of these in the boost::math documentation. Do these work? Are they kept up to date? Any reason why they are not mentioned in the docs or did I just miss it? Thanks, Jesse

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[Building] 64 bit on Linux
by Pearl Rothman 13 Aug '08

13 Aug '08

How can I build 64 bit boost libraries on Linux, preferably using gcc?

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Re: [Boost-users] MS SDK 2003 Compiler Configuration
by Bob Monat 13 Aug '08

13 Aug '08

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Re: [Boost-users] Multi-index container (Modifying non-unique key in the container)
by JOAQUIN M. LOPEZ MUÑOZ 12 Aug '08

12 Aug '08

Hi Ramesh, ________________________________ De: boost-users-bounces(a)lists.boost.org [boost-users-bounces(a)lists.boost.org] En nombre de Ramesh [rramesh1(a)gmail.com] Enviado el: martes, 12 de agosto de 2008 7:40 Para: boost-users(a)lists.boost.org Asunto: [Boost-users] Multi-index container (Modifying non-unique key in the container) > > Hi. > > I am using boost multi-index container for storing objects of type class A, in the class key1 & > Key 3 are unique and key2 is non-unique. I try to insert objects of type A and it works fine. > No issues. > > At some point after the insertion, I wish to modify the key2 to 20 in the container. Can I do this > with modify? If yes How do I define the iterator (since I need to do a find based on key1 but > modify key2 in the container) You have two options: 1. Use modify(), which is passed the entire element rather than the key, and modify key2 at your pleasure. 2. Project the key1-iterator to a key2-iterator using the projection facilities: http://www.boost.org/libs/multi_index/doc/tutorial/basics.html#projection and then use modify_key() with the key2-iterator. BTW, I've noticed that you're wrapping the A objects into a DataMap class that, oddily enough, replicates the key1, key2 and key3 members. Why aren't you using A members directly thus disposing of the DataMap wrapper? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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sorting a ublas matrix
by Ed 12 Aug '08

12 Aug '08

#include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/io.hpp> using namespace boost::numeric::ublas; matrix<MyObject> m_MyObjects(nRows, nCols); I have a ublas matrix of objects as declared above... Is there a way within the Boost lib (i.e. something I don't have to write much custom code to use) that I can use to sort the matrix by a value of one of the data members of MyObject? For example If class MyObject { int thisOne; } and m_MyObjects(0,0).thisOne = 1; m_MyObjects(1,0).thisOne = 0; m_MyObjects(0,1).thisOne = 4; m_MyObjects(1,1).thisOne = 2; It will sort the matrix so that m_MyObjects(0,0).thisOne = 0; m_MyObjects(1,0).thisOne = 1; m_MyObjects(0,1).thisOne = 2; m_MyObjects(1,1).thisOne = 4; Ed

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boost::serialization xml_archive usage
by Markus Schwarzenberg 12 Aug '08

12 Aug '08

Hi, i just recently startet to dip into boost::serialization. In the examples directory, there is demo.cpp, in which text_archive is used. From my understanding of the tutorial ("In addition to text archives, the library includes archive class for native binary data and xml formatted data Interfaces to all archive classes are all identical.") it should be possible to switch from text_archive to xml_archive by just replacing text_[io]archive by xml_[io]archive and include the required header files. However, when I do this, I'm getting lots of compiler error messages like (Linux, gcc-4.1.2, boost-1.35.0) /usr/include/boost-1_35/boost/archive/basic_xml_oarchive.hpp: In member function 'void boost::archive::basic_xml_oarchive<Archive>::save_override(T&, int) [with T = const bus_schedule, Archive = boost::archive::xml_oarchive]': /usr/include/boost-1_35/boost/archive/detail/interface_oarchive.hpp:64: instantiated from 'Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = const bus_schedule, Archive = boost::archive::xml_oarchive]' demo-using-xml.cpp:286: instantiated from here /usr/include/boost-1_35/boost/archive/basic_xml_oarchive.hpp:88: error: no matching function for call to 'assertion_failed(mpl_::failed************ boost::serialization::is_wrapper<const bus_schedule>::************)' /usr/include/boost-1_35/boost/archive/basic_xml_iarchive.hpp: In member function 'void boost::archive::basic_xml_iarchive<Archive>::load_override(T&, int) [with T = bus_schedule, Archive = boost::archive::xml_iarchive]': /usr/include/boost-1_35/boost/archive/xml_iarchive.hpp:74: instantiated from 'void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = bus_schedule, Archive = boost::archive::xml_iarchive]' /usr/include/boost-1_35/boost/archive/detail/interface_iarchive.hpp:63: instantiated from 'Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = bus_schedule, Archive = boost::archive::xml_iarchive]' demo-using-xml.cpp:297: instantiated from here The original demo.cpp however compiles fine. The difference to the version using xml_archive is just: --- demo.cpp 2008-08-11 18:06:45.394403000 +0200 +++ demo-using-xml.cpp 2008-08-12 07:33:33.147259000 +0200 @@ -14,8 +14,8 @@ #include <boost/archive/tmpdir.hpp> -#include <boost/archive/text_iarchive.hpp> -#include <boost/archive/text_oarchive.hpp> +#include <boost/archive/xml_iarchive.hpp> +#include <boost/archive/xml_oarchive.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/utility.hpp> @@ -282,7 +282,7 @@ void save_schedule(const bus_schedule &s, const char * filename){ // make an archive std::ofstream ofs(filename); - boost::archive::text_oarchive oa(ofs); + boost::archive::xml_oarchive oa(ofs); oa << s; } @@ -291,7 +291,7 @@ { // open the archive std::ifstream ifs(filename); - boost::archive::text_iarchive ia(ifs); + boost::archive::xml_iarchive ia(ifs); // restore the schedule from the archive ia >> s; @@ -352,7 +352,7 @@ std::cout << original_schedule; std::string filename(boost::archive::tmpdir()); - filename += "/demofile.txt"; + filename += "/demofile.xml"; // save the schedule save_schedule(original_schedule, filename.c_str()); What am I doing wrong? Thanks, Markus Schwarzenberg

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