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Re: [boost] Is there any interest in a library that provides container
by brangdon＠cix.compulink.co.uk 27 Oct '05

27 Oct '05

In-Reply-To: <djpuvk$q3d$1(a)sea.gmane.org> simon(a)hand-multimedia.co.nz (Simon Buchan) wrote (abridged): > > Generally when I've wished for that I've also wished for a few other > > virtual functions. For example, a hook which gets called whenever an > > item is added to the vector [...] > > That's what your class would add, presumably. Yes, but as I understand it, I can't usefully add them by inheriting from the proposed class. This is because, eg, virtual_vector::push_back is not virtual. Users could do: my_vec<int> *p1 = new my_vec; p1->push_back( 0 ); // OK, uses my hook. virtual_vector *p2 = p1; p2->push_back( 0 ); // Silent error, does not use my hook. In my view to be useful a virtual_vector would need lots of virtual methods, not just the destructor. > But when you *do* want to write a vector (or whatever) interface > compliant class, it's a bloody pain to do it for each one you do. I can only report my experience, which is that I've never wanted to do that. > His impl has the benefit that you just publicly inherit from this class, > and add the extra stuff in, overriding any methods that you want to do > differently. (I assume the forwarders will be virtual?) I didn't think he did intend that the forwarders be virtual. If it is, then I withdraw my objection. And I am curious as to whether he has: void virtual_vector::clear() { m_vector.clear(); } or: void virtual_vector::clear() { erase( begin(), end() ); } That is, whether I have to override both erase and clear or just erase. And whether things like begin() and end() are also virtual, and whether the iterators they return have virtual methods too. It sounds like it could be a performance hit. > > In general inheriting from anything in the std library has the > > drawback that it injects unknown junk names into your class. > > Inheriting from a boost class is hardly better. > > Actually, his posted impl doesn't do that. He isn't doing, but he proposes that users do. The reason for giving boost::virtual_vector a virtual destructor is so that users can inherit from it. -- Dave Harris, Nottingham, UK.

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Re: [boost] Is there any interest in a library that provides container
by brangdon＠cix.compulink.co.uk 27 Oct '05

27 Oct '05

In-Reply-To: <6.2.3.4.2.20051026233845.06694ac0(a)mail.rudbek.com> vawjr(a)rudbek.com (Victor A. Wagner Jr.) wrote (abridged): > OK, fix the core language so that I don't have to write the whole > batch of forwarding functions You can use private inheritance and using-declarations, if that helps. > AND I get the new ones automatically when std::vector gets updated!! That's the controversial part. If you inherit from std::vector it is relatively easy for changes to the std library to break your code. The worst case is when the base class adds a virtual function with the same name as one of your private member functions. You might consider using non-member functions which take a std::vector argument instead. It sounds like you are not adding any data or virtual functions, so your new stuff may not actually need to be member functions? -- Dave Harris, Nottingham, UK.

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[Boost-bugs] [ boost-Support Requests-1339778 ] Problem running configure for unsupported platform
by SourceForge.net 27 Oct '05

27 Oct '05

Support Requests item #1339778, was opened at 2005-10-27 10:59 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=207586&aid=1339778&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Building Boost Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: Problem running configure for unsupported platform Initial Comment: I'm trying to build Boost for HP NonStop system using a cross compiler running on cygwin. I'm just starting out trying to run ".../boost/libs/config/configure" to generate an initial confg header. This is failing on the attempt to simply compile an empty "main" configure: failed program was: | /* confdefs.h. */ | | #define PACKAGE_NAME "" | #define PACKAGE_TARNAME "" | #define PACKAGE_VERSION "" | #define PACKAGE_STRING "" | #define PACKAGE_BUGREPORT "" | /* end confdefs.h. */ | | int | main () | { | | ; | return 0; | } If I manually create such a file and compile it with the following line, I find the following: DKICK1@IL27-7496 /usr/local/boost_1_33_0/libs/config $ ls config.htm config.log configure duff.cc index.html test tools DKICK1@IL27-7496 /usr/local/boost_1_33_0/libs/config $ cat duff.cc int main () { ; return 0; } DKICK1@IL27-7496 /usr/local/boost_1_33_0/libs/config $ /usr/local/compaq-etk-nse/G06.24/bin/c89.exe -Wversion3 -Winspect -Wsaveabend -Wrefalign=2 -Wfieldalign=auto -Wnolist -Wverbose -WC -Wrunnamed -Whighpin=off -Wnld="-allow_missing_libs -libname $APPL1.CSSLIB.NLIBRARY -libvol $APPL1.CSSL IB" -Wsystype=guardian duff.cc c89 args: C:\Program Files\Compaq ETK-NSE\G06.24\bin\c89.exe -Wversion3 -Winspec t -Wsaveabend -Wrefalign=2 -Wfieldalign=auto -Wnolist -Wverbose -WC -Wrunnamed - Whighpin=off -Wnld=-allow_missing_libs -libname .CSSLIB.NLIBRARY -libvol .CSSLIB -Wsystype=guardian duff.cc C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\cfe.dll loaded C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\uopt.dll loaded C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\ugen.dll loaded C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\as1.dll loaded c89: running C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\cfe.dll -ZtG -ZR2 -Zg0 -ZSD:\Profiles\DKICK1\LOCALS~1\Temp\t216328.T -ZUD:\Profiles\DKICK1\LOCALS~1\Te mp\t316328.B -D__cplusplus -a -ZnA -a -C -Zz -IC:\Program Files\Compaq ETK-NSE\G 06.24\include\ duff.cc c89: running C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\ugen.dll D:\Profiles\D KICK1\LOCALS~1\Temp\t316328.B -o D:\Profiles\DKICK1\LOCALS~1\Temp\ugen216328.G - t D:\Profiles\DKICK1\LOCALS~1\Temp\t216328.T -temp D:\Profiles\DKICK1\LOCALS~1\T emp\ugen316328.t -EB -g0 -O1 -G 8 c89: running C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\as1.dll D:\Profiles\DK ICK1\LOCALS~1\Temp\ugen216328.G -o duff.o -t D:\Profiles\DKICK1\LOCALS~1\Temp\t2 16328.T -Olimit 2500 -EB -g0 -O1 -elf -G 8 C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\nld.dll loaded c89: running C:\Program Files\Compaq ETK-NSE\G06.24\cmplr\nld.dll -allow_missing _libs -libname .CSSLIB.NLIBRARY -libvol .CSSLIB -o a.out -elf -set systype guard ian -set highpin off -set highrequestor off -set inspect on -set runnamed on -se t saveabend on C:\Program Files\Compaq ETK-NSE\G06.24\lib\crtlmain.o C:\Program Files\Compaq ETK-NSE\G06.24\lib\cppinit3.o duff.o -L C:\Program Files\Compaq ETK -NSE\G06.24\lib\ -lstl -obey C:\Program Files\Compaq ETK-NSE\G06.24\lib\libc.obe y c89.exe: Exiting with status 0; 0 error(s). DKICK1@IL27-7496 /usr/local/boost_1_33_0/libs/config $ ls a.out config.htm config.log configure duff.cc index.html test tools DKICK1@IL27-7496 /usr/local/boost_1_33_0/libs/config $ However, if I try the following: DKICK1@IL27-7496 /usr/local/boost_1_33_0/libs/config $ sh ./configure CXX=/usr/local/compaq-etk-nse/G06.24/bin/c89 CXXFLAGS='-Wversi on3 -Winspect -Wsaveabend -Wrefalign=2 -Wfieldalign=auto -Wnolist -Wverbose -WC ' LDFLAGS='-Wrunnamed -Whighpin=off -Wnld="-allow_missing_libs -libname \ .CSSLIB.NLIBRARY -libvol $APPL1.CSSLIB" -Wsystype=guardian' I get the attached config.log. I'm sure that the problem has something to do with quoting/expansion/etc. I've tried variations on the theme, including exporting these environment variables instead of passing them on the command line, but I can't seem to find the right combination of quotes and escapes to get configure to do what I want it to do. Any help? BTW, the option to get this compiler to dump the version is '-Wversion'. $ /usr/local/compaq-etk-nse/G06.24/bin/c89.exe -Wversion @(#) $Version: T8164G09_01MAR2004_c89_05MAR2004_WIN32V_ $c89.exe: error: No input file. I'm not sure how to get configure to use this option correctly, though. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=207586&aid=1339778&group_… ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today * Register for a JBoss Training Course Free Certification Exam for All Training Attendees Through End of 2005 Visit http://www.jboss.com/services/certification for more information _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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Boost regression notification (2005-10-27 [HEAD])
by Douglas Gregor 27 Oct '05

27 Oct '05

Boost regression test failures ------------------------------ Report time: 2005-10-27T05:00:12Z This report lists all regression test failures on release platforms. Detailed report: http://engineering.meta-comm.com/boost-regression/CVS-HEAD/developer/issues… 340 failures in 14 libraries: concept_check (13) date_time (2) graph (2) mpl (1) parameter (2) python (1) serialization (36) spirit (8) thread (4) tr1 (133) tuple (1) type_traits (111) typeof (21) xpressive (5) |concept_check| stl_concept_covering: cw-9_4 gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin intel-win32-9_0 intel-win32-9_0 mingw-3_4_2 msvc vc-7_1 |date_time| testwcustom_time_zone: gcc-2.95.3-linux testwposix_time_zone: gcc-2.95.3-linux |graph| graphviz_test: vc-7_1 layout_test: intel-win32-9_0 |mpl| size_t: gcc-4_0-darwin |parameter| efficiency: msvc sfinae: msvc |python| exec: intel-win32-9_0 |serialization| test_class_info_load_binary_archive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_binary_archive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_archive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_archive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_warchive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_text_warchive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_archive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_archive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_warchive: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_class_info_load_xml_warchive_dll: gcc-3_3-darwin gcc-3_4_3-sunos gcc-4_0-darwin test_const_save_fail1: msvc test_const_save_fail2: msvc test_const_save_fail3: msvc test_map_binary_archive_dll: msvc test_map_text_archive_dll: msvc test_map_text_warchive_dll: msvc |spirit| action_tests_debug: gcc-3_4_3-sunos distinct_tests_debug: gcc-3_4_3-sunos escape_char_parser_tests_debug: gcc-3_4_3-sunos grammar_def_test_debug: gcc-3_4_3-sunos switch_problem_debug: gcc-3_4_3-sunos switch_tests_single_debug: gcc-3_4_3-sunos traverse_tests: intel-win32-9_0 traverse_tests_debug: intel-win32-9_0 |thread| test_condition: gcc-3_4_3-sunos test_mutex: gcc-3_4_3-sunos test_tss: gcc-3_4_3-sunos gcc-3_4_3-sunos |tr1| run_complex_overloads: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.4.4-linux run_random: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.4.4-linux std_test_array: gcc-2.95.3-linux std_test_array_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 std_test_bind: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin std_test_bind_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 std_test_boost: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux std_test_complex: gcc-2.95.3-linux std_test_function: gcc-2.95.3-linux std_test_function_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 std_test_hash: gcc-2.95.3-linux std_test_mem_fn: gcc-2.95.3-linux std_test_mem_fn_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 std_test_random: gcc-2.95.3-linux std_test_reference_wrapper: gcc-2.95.3-linux std_test_reference_wrapper_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 std_test_regex: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.4.4-linux std_test_result_of: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux std_test_shared_ptr: gcc-2.95.3-linux std_test_tr1_include: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux std_test_tuple: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux std_test_tuple_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 std_test_type_traits: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3_3-darwin test_algorithm: gcc-2.95.3-stlport-4.6.2-linux test_array_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 test_bind: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin test_bind_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 test_complex: gcc-2.95.3-linux test_exception: gcc-2.95.3-stlport-4.6.2-linux test_function_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 test_functional: gcc-2.95.3-linux test_hash: gcc-2.95.3-linux test_mem_fn_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 test_memory: gcc-2.95.3-linux test_new: gcc-2.95.3-stlport-4.6.2-linux test_reference_wrapper_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 test_regex: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.4.4-linux test_result_of: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux test_tr1_include: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux test_tuple: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux test_tuple_tricky: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3.4.4-linux gcc-3_3-darwin vc-7_1 test_type_traits: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3_3-darwin test_utility: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux |tuple| tuple_test_bench: gcc-3_4_3-sunos |type_traits| tr1_add_const_test: gcc-2.95.3-linux intel-win32-9_0 tr1_add_cv_test: gcc-2.95.3-linux intel-win32-9_0 tr1_add_pointer_test: gcc-2.95.3-linux intel-win32-9_0 tr1_add_reference_test: gcc-2.95.3-linux intel-win32-9_0 tr1_add_volatile_test: gcc-2.95.3-linux intel-win32-9_0 tr1_aligned_storage_test: gcc-2.95.3-linux intel-win32-9_0 tr1_alignment_of_test: gcc-2.95.3-linux intel-win32-9_0 tr1_extent_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_nothrow_assign_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_nothrow_constr_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_nothrow_copy_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_trivial_assign_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_trivial_constr_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_trivial_copy_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_trivial_destructor_test: gcc-2.95.3-linux intel-win32-9_0 tr1_has_virtual_destructor_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_abstract_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux gcc-3.3.6-linux gcc-3_3-darwin intel-win32-9_0 tr1_is_arithmetic_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_array_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_base_of_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_class_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_compound_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_const_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_convertible_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux intel-win32-9_0 tr1_is_empty_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_enum_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_floating_point_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_function_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_fundamental_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_integral_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_member_func_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_member_obj_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_member_pointer_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_object_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_pod_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_pointer_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_polymorphic_test: gcc-2.95.3-linux gcc-2.95.3-stlport-4.6.2-linux intel-win32-9_0 tr1_is_reference_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_same_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_scalar_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_signed_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_union_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_unsigned_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_void_test: gcc-2.95.3-linux intel-win32-9_0 tr1_is_volatile_test: gcc-2.95.3-linux intel-win32-9_0 tr1_rank_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_all_extents_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_const_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_cv_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_extent_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_pointer_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_reference_test: gcc-2.95.3-linux intel-win32-9_0 tr1_remove_volatile_test: gcc-2.95.3-linux intel-win32-9_0 |typeof| data_member_native: cw-9_4 function_native: cw-9_4 msvc function_ptr_native: cw-9_4 function_ref_native: cw-9_4 lvalue_native: cw-9_4 msvc member_function_native: cw-9_4 modifiers_emulation: cw-9_4 modifiers_native: cw-9_4 noncopyable_native: cw-9_4 std_emulation: cw-9_4 std_native: cw-9_4 template_dependent_native: cw-9_4 template_enum_native: cw-9_4 template_int_native: cw-9_4 template_multiword_native: cw-9_4 template_tpl_native: cw-9_4 msvc template_type_native: cw-9_4 type_native: cw-9_4 |xpressive| test3u: gcc-3_3-darwin test4u: gcc-3_3-darwin test5u: gcc-3_3-darwin test6u: gcc-3_3-darwin test9u: gcc-3_3-darwin

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Bug list status
by Marshall Clow 27 Oct '05

27 Oct '05

Three weeks ago: 144 open bugs Two weeks ago: 117 open bugs Last week: 96 open bugs Today: 94 open bugs Thanks to everyone who dealt with the bugs! [ But we're slowing down - I blame the 1.33.1 release process ;-) ] Here are the currently opened bugs, sorted by assignee. If you think that a bug has been assigned incorrectly, please let me know. P.S. I need someone to fix the bugs in the tokenizer library!! Assignee: agurtovoy <http://sourceforge.net/users/agurtovoy/> Summary: mpl::select2nd on vc6 Bug #: 812263 <http://sourceforge.net/tracker/index.php?func=detail&aid=812263&group_id=75…> Assignee: az_sw_dude <http://sourceforge.net/users/az_sw_dude/> Summary: wrong usage of ios_base::narrow Bug #: 989487 <http://sourceforge.net/tracker/index.php?func=detail&aid=989487&group_id=75…> Assignee: az_sw_dude <http://sourceforge.net/users/az_sw_dude/> Summary: date_time type conversion warning Bug #: 1069225 <http://sourceforge.net/tracker/index.php?func=detail&aid=1069225&group_id=7…> Assignee: az_sw_dude <http://sourceforge.net/users/az_sw_dude/> Summary: local_adjustor::utc_to_local throws 'Time label invalid' Bug #: 1220011 <http://sourceforge.net/tracker/index.php?func=detail&aid=1220011&group_id=7…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: filesytem::directory_iterator portability Bug #: 735403 <http://sourceforge.net/tracker/index.php?func=detail&aid=735403&group_id=75…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: boost::filesystem fails in posix with files containing ':' Bug #: 776146 <http://sourceforge.net/tracker/index.php?func=detail&aid=776146&group_id=75…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: clock is not portable Bug #: 788762 <http://sourceforge.net/tracker/index.php?func=detail&aid=788762&group_id=75…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: Boost::Filesystem fails when last character in path is ':' Bug #: 875970 <http://sourceforge.net/tracker/index.php?func=detail&aid=875970&group_id=75…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: filesystem::directory_iterator returns incorrect listing Bug #: 937606 <http://sourceforge.net/tracker/index.php?func=detail&aid=937606&group_id=75…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: xtime_cmp: use comparison not subtraction Bug #: 993272 <http://sourceforge.net/tracker/index.php?func=detail&aid=993272&group_id=75…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: boost::filesystem::exists is broken on cygwin Bug #: 1010681 <http://sourceforge.net/tracker/index.php?func=detail&aid=1010681&group_id=7…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: boost::filesystem is systematically broken Bug #: 1012135 <http://sourceforge.net/tracker/index.php?func=detail&aid=1012135&group_id=7…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: boost::filesystem::native() should reject '/' on non-Win32 Bug #: 1151823 <http://sourceforge.net/tracker/index.php?func=detail&aid=1151823&group_id=7…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: boost::filesystem::exists has bugs with UNC paths Bug #: 1164057 <http://sourceforge.net/tracker/index.php?func=detail&aid=1164057&group_id=7…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: boost::filesystem::equivalent does not work on w98 Bug #: 1235262 <http://sourceforge.net/tracker/index.php?func=detail&aid=1235262&group_id=7…> Assignee: beman_dawes <http://sourceforge.net/users/beman_dawes/> Summary: path and directory_iterator doesn't handle windows root path Bug #: 1259176 <http://sourceforge.net/tracker/index.php?func=detail&aid=1259176&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: no conversion from type to const_type Bug #: 547743 <http://sourceforge.net/tracker/index.php?func=detail&aid=547743&group_id=75…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: EdgeListS = setS for adjacency_list does not work Bug #: 1163077 <http://sourceforge.net/tracker/index.php?func=detail&aid=1163077&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: adjacency_matrix should model BidirectionalGraph Bug #: 1168411 <http://sourceforge.net/tracker/index.php?func=detail&aid=1168411&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: LEDA graph adaptors for undirected graphs Bug #: 1168420 <http://sourceforge.net/tracker/index.php?func=detail&aid=1168420&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: LEDA adaptors for node_array, edge_array Bug #: 1168424 <http://sourceforge.net/tracker/index.php?func=detail&aid=1168424&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: LEDA graph adaptors do not handle hidden nodes properly Bug #: 1168431 <http://sourceforge.net/tracker/index.php?func=detail&aid=1168431&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: Generate patches for Graph bugs in 1.32.0 Bug #: 1169920 <http://sourceforge.net/tracker/index.php?func=detail&aid=1169920&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: Investigate other kinds of heaps for dijkstra_shortest_paths Bug #: 1170106 <http://sourceforge.net/tracker/index.php?func=detail&aid=1170106&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: function.hpp breaks assign.hpp Bug #: 1181272 <http://sourceforge.net/tracker/index.php?func=detail&aid=1181272&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: vertex bundle properties do not work with VC++.NET 2003 Bug #: 1190394 <http://sourceforge.net/tracker/index.php?func=detail&aid=1190394&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: BGL graph types do not support allocators Bug #: 1193883 <http://sourceforge.net/tracker/index.php?func=detail&aid=1193883&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: random_vertex/random_edge are unnecessarily inefficient Bug #: 1204684 <http://sourceforge.net/tracker/index.php?func=detail&aid=1204684&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: Document copy_component Bug #: 1204688 <http://sourceforge.net/tracker/index.php?func=detail&aid=1204688&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: reverse_graph and constness of property maps Bug #: 1246336 <http://sourceforge.net/tracker/index.php?func=detail&aid=1246336&group_id=7…> Assignee: dgregor <http://sourceforge.net/users/dgregor/> Summary: html docs frequently missing key words Bug #: 1294420 <http://sourceforge.net/tracker/index.php?func=detail&aid=1294420&group_id=7…> Assignee: djowel <http://sourceforge.net/users/djowel/> Summary: Miss ' = ParserT()' Bug #: 907299 <http://sourceforge.net/tracker/index.php?func=detail&aid=907299&group_id=75…> Assignee: djowel <http://sourceforge.net/users/djowel/> Summary: spirit insert_key_actor.hpp Bug #: 1059936 <http://sourceforge.net/tracker/index.php?func=detail&aid=1059936&group_id=7…> Assignee: djowel <http://sourceforge.net/users/djowel/> Summary: Another config correction for Sun C++ Bug #: 1220782 <http://sourceforge.net/tracker/index.php?func=detail&aid=1220782&group_id=7…> Assignee: dlwalker <http://sourceforge.net/users/dlwalker/> Summary: template problems with common_factor.hpp Bug #: 491637 <http://sourceforge.net/tracker/index.php?func=detail&aid=491637&group_id=75…> Assignee: ebf <http://sourceforge.net/users/ebf/> Summary: boost::blank - missing operators Bug #: 1191356 <http://sourceforge.net/tracker/index.php?func=detail&aid=1191356&group_id=7…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: timeconv.inl to_duration() nsec error Bug #: 548104 <http://sourceforge.net/tracker/index.php?func=detail&aid=548104&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: Solaris - once.cpp compile error Bug #: 549162 <http://sourceforge.net/tracker/index.php?func=detail&aid=549162&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: pthread_delay_np() parm incorrect Bug #: 551157 <http://sourceforge.net/tracker/index.php?func=detail&aid=551157&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: Bosot.Thread.condition(win32).notify_all Bug #: 551308 <http://sourceforge.net/tracker/index.php?func=detail&aid=551308&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: AIX 4.3 SIGSEGV at thread termination Bug #: 551577 <http://sourceforge.net/tracker/index.php?func=detail&aid=551577&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: boost::threads uses msvc only function? Bug #: 568951 <http://sourceforge.net/tracker/index.php?func=detail&aid=568951&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: threads unnecessary #include Bug #: 571615 <http://sourceforge.net/tracker/index.php?func=detail&aid=571615&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: BCB6 throw EExternelException Bug #: 596149 <http://sourceforge.net/tracker/index.php?func=detail&aid=596149&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: thread_cleanup problems Bug #: 649291 <http://sourceforge.net/tracker/index.php?func=detail&aid=649291&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: Mac implementation of threads is CPU hog Bug #: 885045 <http://sourceforge.net/tracker/index.php?func=detail&aid=885045&group_id=75…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: condition variables and recursive_mutex Bug #: 1072605 <http://sourceforge.net/tracker/index.php?func=detail&aid=1072605&group_id=7…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: compiler error on Mac implementation of threads Bug #: 1201779 <http://sourceforge.net/tracker/index.php?func=detail&aid=1201779&group_id=7…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: timeconv.inl line 116 copy/paste error Bug #: 1239052 <http://sourceforge.net/tracker/index.php?func=detail&aid=1239052&group_id=7…> Assignee: glassfordm <http://sourceforge.net/users/glassfordm/> Summary: Exception safety in class 'thread' Bug #: 1305885 <http://sourceforge.net/tracker/index.php?func=detail&aid=1305885&group_id=7…> Assignee: grafik <http://sourceforge.net/users/grafik/> Summary: 'failed fileclone' when building with -j on 1.32.0 Bug #: 1102389 <http://sourceforge.net/tracker/index.php?func=detail&aid=1102389&group_id=7…> Assignee: grafik <http://sourceforge.net/users/grafik/> Summary: boost jam problem with parallel builds Bug #: 1234224 <http://sourceforge.net/tracker/index.php?func=detail&aid=1234224&group_id=7…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: tokenizer fails with wchar_t Bug #: 446155 <http://sourceforge.net/tracker/index.php?func=detail&aid=446155&group_id=75…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: tokenizer not works with Dinkumware 308 Bug #: 458236 <http://sourceforge.net/tracker/index.php?func=detail&aid=458236&group_id=75…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: boost::tokenizer implicit typename Bug #: 912368 <http://sourceforge.net/tracker/index.php?func=detail&aid=912368&group_id=75…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: Tokenizer.hpp doesn't work with BOOST_ENABLE_ASSERT_HANDLER Bug #: 972406 <http://sourceforge.net/tracker/index.php?func=detail&aid=972406&group_id=75…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: Compiler error for tokenizer on Solaris Bug #: 976241 <http://sourceforge.net/tracker/index.php?func=detail&aid=976241&group_id=75…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: tokenizer and signed char Bug #: 1003889 <http://sourceforge.net/tracker/index.php?func=detail&aid=1003889&group_id=7…> Assignee: jbandela <http://sourceforge.net/users/jbandela/> Summary: token_iterator::at_end() result is inversed Bug #: 1338326 <http://sourceforge.net/tracker/index.php?func=detail&aid=1338326&group_id=7…> Assignee: jmaurer <http://sourceforge.net/users/jmaurer/> Summary: Diff in state of mersenne_twister gen between GCC3.41 & CW9 Bug #: 1115124 <http://sourceforge.net/tracker/index.php?func=detail&aid=1115124&group_id=7…> Assignee: joerg_walter <http://sourceforge.net/users/joerg_walter/> Summary: bug in ublas/storage.hpp Bug #: 1095697 <http://sourceforge.net/tracker/index.php?func=detail&aid=1095697&group_id=7…> Assignee: joerg_walter <http://sourceforge.net/users/joerg_walter/> Summary: dead links in uBLAS page Bug #: 1169273 <http://sourceforge.net/tracker/index.php?func=detail&aid=1169273&group_id=7…> Assignee: joerg_walter <http://sourceforge.net/users/joerg_walter/> Summary: Documentation not available on web site: Bug #: 1228242 <http://sourceforge.net/tracker/index.php?func=detail&aid=1228242&group_id=7…> Assignee: joerg_walter <http://sourceforge.net/users/joerg_walter/> Summary: uBLAS::subslice doesn't work Bug #: 1292635 <http://sourceforge.net/tracker/index.php?func=detail&aid=1292635&group_id=7…> Assignee: johnmaddock <http://sourceforge.net/users/johnmaddock/> Summary: Adding boost::is_complex to type_traits.hpp Bug #: 1315712 <http://sourceforge.net/tracker/index.php?func=detail&aid=1315712&group_id=7…> Assignee: jsiek <http://sourceforge.net/users/jsiek/> Summary: invalid result for File Dependency Examp Bug #: 551110 <http://sourceforge.net/tracker/index.php?func=detail&aid=551110&group_id=75…> Assignee: jsiek <http://sourceforge.net/users/jsiek/> Summary: Spelling of Edmonds-Karp-Algorithm Bug #: 1226292 <http://sourceforge.net/tracker/index.php?func=detail&aid=1226292&group_id=7…> Assignee: mark_rodgers <http://sourceforge.net/users/mark_rodgers/> Summary: Cannot compile octonion_test.cpp because of bug in sinc.hpp Bug #: 751269 <http://sourceforge.net/tracker/index.php?func=detail&aid=751269&group_id=75…> Assignee: mark_rodgers <http://sourceforge.net/users/mark_rodgers/> Summary: Cannot compile octonion_test.cpp because of bug in sinc.hpp Bug #: 751289 <http://sourceforge.net/tracker/index.php?func=detail&aid=751289&group_id=75…> Assignee: nesotto <http://sourceforge.net/users/nesotto/> Summary: boost.range and 'const char[]'. Bug #: 1272315 <http://sourceforge.net/tracker/index.php?func=detail&aid=1272315&group_id=7…> Assignee: nobody Summary: failure in boost jam unit tests on cygwin Bug #: 940941 <http://sourceforge.net/tracker/index.php?func=detail&aid=940941&group_id=75…> Assignee: nobody Summary: Can't build on cygwin Bug #: 1145183 <http://sourceforge.net/tracker/index.php?func=detail&aid=1145183&group_id=7…> Assignee: ramey <http://sourceforge.net/users/ramey/> Summary: many 'virtual functions vs. non-virtual destructor' warnings Bug #: 1312222 <http://sourceforge.net/tracker/index.php?func=detail&aid=1312222&group_id=7…> Assignee: ramey <http://sourceforge.net/users/ramey/> Summary: Compiler warning with gcc on Linux Bug #: 1337412 <http://sourceforge.net/tracker/index.php?func=detail&aid=1337412&group_id=7…> Assignee: ramey <http://sourceforge.net/users/ramey/> Summary: warning caused by size_t to unsigned int conversion on vc++8 Bug #: 1338178 <http://sourceforge.net/tracker/index.php?func=detail&aid=1338178&group_id=7…> Assignee: rogeeff <http://sourceforge.net/users/rogeeff/> Summary: typo in Boost.Test document Bug #: 629685 <http://sourceforge.net/tracker/index.php?func=detail&aid=629685&group_id=75…> Assignee: rogeeff <http://sourceforge.net/users/rogeeff/> Summary: BOOST_CHECK_CLOSE in Boost Test Library Bug #: 754551 <http://sourceforge.net/tracker/index.php?func=detail&aid=754551&group_id=75…> Assignee: rogeeff <http://sourceforge.net/users/rogeeff/> Summary: BOOST_AUTO_TEST doesn't work across multiple units Bug #: 823589 <http://sourceforge.net/tracker/index.php?func=detail&aid=823589&group_id=75…> Assignee: rogeeff <http://sourceforge.net/users/rogeeff/> Summary: Bug in build via MSVC Solution Bug #: 953876 <http://sourceforge.net/tracker/index.php?func=detail&aid=953876&group_id=75…> Assignee: rogeeff <http://sourceforge.net/users/rogeeff/> Summary: Don't work multilevel hierarchy of test suites in dll. Bug #: 1076691 <http://sourceforge.net/tracker/index.php?func=detail&aid=1076691&group_id=7…> Assignee: samuel_k <http://sourceforge.net/users/samuel_k/> Summary: format: assert when parsing invalid pattern Bug #: 1326132 <http://sourceforge.net/tracker/index.php?func=detail&aid=1326132&group_id=7…> Assignee: shammah <http://sourceforge.net/users/shammah/> Summary: ct_gcd_lcm.hpp compilation error Bug #: 558174 <http://sourceforge.net/tracker/index.php?func=detail&aid=558174&group_id=75…> Assignee: shammah <http://sourceforge.net/users/shammah/> Summary: test_pool_alloc.cpp not compile CW8.1 Bug #: 586779 <http://sourceforge.net/tracker/index.php?func=detail&aid=586779&group_id=75…> Assignee: shammah <http://sourceforge.net/users/shammah/> Summary: pool::purge_memory() does not reset next_size Bug #: 984124 <http://sourceforge.net/tracker/index.php?func=detail&aid=984124&group_id=75…> Assignee: shammah <http://sourceforge.net/users/shammah/> Summary: Borland compiler error with Pool, boost::pool_allocator Bug #: 988124 <http://sourceforge.net/tracker/index.php?func=detail&aid=988124&group_id=75…> Assignee: shammah <http://sourceforge.net/users/shammah/> Summary: perfomance: memory cleanup for pool takes too long Bug #: 995270 <http://sourceforge.net/tracker/index.php?func=detail&aid=995270&group_id=75…> Assignee: shammah <http://sourceforge.net/users/shammah/> Summary: boost::pool_allocator breaks with vector of vectors Bug #: 1179641 <http://sourceforge.net/tracker/index.php?func=detail&aid=1179641&group_id=7…> Assignee: turkanis <http://sourceforge.net/users/turkanis/> Summary: Self division wrong in template rational Bug #: 504411 <http://sourceforge.net/tracker/index.php?func=detail&aid=504411&group_id=75…> Assignee: turkanis <http://sourceforge.net/users/turkanis/> Summary: Rational sum not optimal for overflows Bug #: 519635 <http://sourceforge.net/tracker/index.php?func=detail&aid=519635&group_id=75…> Assignee: turkanis <http://sourceforge.net/users/turkanis/> Summary: rational operator&lt; can overflow Bug #: 798357 <http://sourceforge.net/tracker/index.php?func=detail&aid=798357&group_id=75…> Assignee: turkanis <http://sourceforge.net/users/turkanis/> Summary: boost::rational documentation typos(?) Bug #: 1043616 <http://sourceforge.net/tracker/index.php?func=detail&aid=1043616&group_id=7…> Assignee: turkanis <http://sourceforge.net/users/turkanis/> Summary: no Boolean conversion for boost::rational Bug #: 1239906 <http://sourceforge.net/tracker/index.php?func=detail&aid=1239906&group_id=7…> Assignee: vladimir_prus <http://sourceforge.net/users/vladimir_prus/> Summary: call to split_winmain raises exception for 8-bit locale Bug #: 1206663 <http://sourceforge.net/tracker/index.php?func=detail&aid=1206663&group_id=7…> Assignee: vladimir_prus <http://sourceforge.net/users/vladimir_prus/> Summary: multitoken broken in program_options 1.33 Bug #: 1266877 <http://sourceforge.net/tracker/index.php?func=detail&aid=1266877&group_id=7…> -- -- Marshall Marshall Clow Idio Software <mailto:marshall@idio.com> It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shaking, the shaking becomes a warning. It is by caffeine alone I set my mind in motion.

3 2

Interest in dimension/unit-checking library?
by Geoffrey Romer 27 Oct '05

27 Oct '05

Would there be any interest in a library for attaching units (physical or otherwise) to numeric variables, so that the type system could enforce dimension- and unit-consistency in all calculations, and convert semi-automatically between compatible units? To make this a little more concrete, here's a sketch of the kind of code such a library could enable: --- quantity<meters, double> distance(1.0); quantity<newtons, double> force(5.0); quantity<joules, double> work = distance * force; quantity<calories, double> work_cal = unit_cast<calories>(work); work_cal = work; //Compile error or implicit conversion, // possibly depending on compiler flag quantity<watts, double> power = work; //Compile error- incompatible types --- This library would be somewhat similar to the dimensional-analysis code given by Abrahams and Gurtovoy in their book[1], but with two major enhancements: - it would be defined in terms of specific units (as Abrahams and Gurtovoy suggest in an exercise), rather than general dimensions, so it could catch unit-consistency errors as well as dimension-consistency errors, and it could convert between compatible units - it would allow client code to extend the system with arbitrary units in arbitrary dimensions I should note that although I gave the example in terms of physical units for clarity, I intend this library to be useful not just for physical calculation, but for numerical calculation in general. Almost any time software deals with numbers, it's really dealing with *quantities* (numbers that measure something in terms of some unit), and errors can result if variables with different units are inappropriately combined. The purpose of this library would be to allow developers to prevent those errors with strong typing and compile-time checking, as well as to somewhat ease the task of converting between units when necessary. I know there's been a lot of discussion of units for a GUI library, so I'm especially interested in what people involved in that thread think of this idea- I want to make something sufficiently powerful to be useful in a context like that. [1] http://www.boost.org/libs/mpl/doc/tutorial/tutorial-metafunctions.html

18 100

[range][1.33.1] last few regressions.
by John Maddock 27 Oct '05

27 Oct '05

Otto, can the last few regressions for the range lib be fixed (http://engineering.meta-comm.com/boost-regression/CVS-RC_1_33_0/developer/i…) or should these just be marked up as expected? Thanks, John.

7 9

Re: [boost] Is there any interest in a library that provides container
by brangdon＠cix.compulink.co.uk 27 Oct '05

27 Oct '05

In-Reply-To: <1130256273.28161.245978560(a)webmail.messagingengine.com> atompkins(a)fastmail.fm (Andy Tompkins) wrote (abridged): > I have read a few times that people sometimes wish that std::vector (or > other containers) had a virtual destructor. Generally when I've wished for that I've also wished for a few other virtual functions. For example, a hook which gets called whenever an item is added to the vector, and another which is called when items are removed. I think a vector which is designed to be derived from would need more than just a virtual destructor. If you are adding a vtable you might as well get some milage out of it. On the other hand, I rarely need my container to be polymorphic - at least, not with respect to some library base class like std::vector or boost::virtual_vector. Nor do I usually want my container to have the entire interface of vector. For example, I may not want to allow arbitrary insertion at all. So I tend to write a custom wrapper class that has vector as a private member and just exposes what I need. In general inheriting from anything in the std library has the drawback that it injects unknown junk names into your class. Inheriting from a boost class is hardly better. So overall, I'm not in favour. -- Dave Harris, Nottingham, UK.

3 2

[MPL.Math] gcd_impl improved
by Cromwell Enage 27 Oct '05

27 Oct '05

The gcd_impl specialization for integral constants is now based on the binary GCD algorithm. BOOST_STATIC_CONSTANT is now used over typedef at most intermediate steps. You should see much faster compile times, at least for the gcd_lcm test and example programs. Cromwell D. Enage __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com

1 0

[MPL.Math] numeric_downcast or round_up?
by Cromwell Enage 27 Oct '05

27 Oct '05

--- Simon Buchan wrote: > David Abrahams wrote: > > my_rational<x,1> can be an integral constant *at > > compile time*. I'm not sure it's useful, but > > it's not insane. > > If you for some reason still think this, why not > eagerly evaluate > template<typename Num> > rational<Num,1> > to Num, since we are already eagerly normalising? It's possible to do so, but I see three concerns. One, we need to be careful where to do it. Putting this capability directly in the definition of rational makes expressions like rational<int_<4> > rather useless. Employing downcasting on the result of each rational operation leads us to the second concern: performance. Computationally heavy numeric metafunctions (e.g. exponential, sine) are going to pay extra at each step checking for an event that may never occur. And even if downcasting occurs half the time, if there are just as many regular casts back to rational, we end up overpaying twice as much. We could give users the ability to explicitly downcast any numeric constant. This leads us to the final concern: usefulness. For the moment, I don't see any need beyond rounding; the library provides a numeric metafunction called whole_part if you want truncation. If anybody needs either downcasting or rounding, we'd like to hear from you. Cromwell D. Enage __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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