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[math toolkit] Review reminder
by Matthias Schabel 20 Apr '07

20 Apr '07

Just a friendly reminder from the review manager that the formal review of the proposed Boost Math Toolkit is ongoing, and will continue through the 27th of April. There has been relatively little feedback to date, possibly due to inconvenient timing of conferences and, perhaps preparations for the upcoming release. Hopefully interested individuals will find time to give this library the close look that it deserves and report next week. Matthias Schabel

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[operators] forcing inline
by Olaf Krzikalla 20 Apr '07

20 Apr '07

Hi, I have some SIMD classes where inlining of operators are important even in debug code. In other words: these parts are so performance critical that I compile them with some tweaked compiler flags, because otherwise the application becomes undebuggable. At least gcc [__inline __attribute__((__always_inline__,__nodebug__))] and MSVC2005 [__forceinline] support extra inline statements. Hence in order to use boost::operators I need to tweak operators.hpp to be able to turn on the forced inlining. I'm doing it locally anyway but I'm curious if this technique may be of interest for common use or for other boost parts respectively? Best regards Olaf Krzikalla

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is_enum implementation, why add_reference ?
by Grégory Pakosz 20 Apr '07

20 Apr '07

Hello, I'm currently having a look at boost's type traits implementation. At the moment, I'm curious about is_enum. Can please someone explain me why add_reference is applied before testing convertibility to int_convertible ??? Trying to find more information about how to detect enum types, I only found this reference http://groups.google.com/group/comp.lang.c++.moderated/browse_thread/thread… where it's explained that "An enum is a user-defined type that is convertible to int without an user-defined conversion (and two user-defined conversions in a row are illegal, so you can detect that)." Thank you. Regards, Gregory.

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[type_traits?] enable_if an overload for a function exists
by Michael Marcin 20 Apr '07

20 Apr '07

I want to enable a function templated on a type T if a function it relies on overloaded on that type. All I know is that this compiles for types I want to enable on and fails to compile for types I want to disable on. static float (*const func ) ( float , float ) = std::atan2; // compiles static int (*const func ) ( int , int ) = std::atan2; // fails to compile Ideally I think I'd like to do something like: template< typename T > typename enable_if< is_overloaded< T ( T ), std::asin > >::type some_function( T x ) { std::cout << std::asin(x); } I'm not even sure if I really need this or not. The best I've come up with has problems with the compiler crashing in some cases. It is illustrated by the following toy example (only tested with vs2005). namespace method { namespace detail { template< typename Signature, Signature* signature, typename T = void > struct enable_if_overloaded { typedef T type; }; } // end namespace detail template< typename T > inline typename detail::enable_if_overloaded<T (T), std::asin, radians<T> >::type my_asin( T x ) { return radians<T>( std::asin( x ) ); } template< typename T > inline typename boost::enable_if< boost::is_integral<T>, radians<float> >::type my_asin( T x ) { return my_asin( static_cast<float>(x) ); } } // end namespace method void test() { method::my_asin( 1.1f ); method::my_asin( 1 ); } Thanks, Michael Marcin

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Announce: scope_exit version 0.03
by Alexander Nasonov 19 Apr '07

19 Apr '07

Version 0.03 is available for download at http://tinyurl.com/yps8zs You can read documentation online: http://194.6.223.221/~nasonov/scope_exit-0.03/libs/scope_exit/doc/html/ What's new in this version: - Based on simpler 0.01 interface but with a better implementation - Found a problem on MSVC. It doesn't link when a block in a header file is included by more than one cpp file. I tried __declspec(selectany) and __forceinline. - Added experimental BOOST_SCOPE_EXIT_FASTER_IMPL. See documentation for details. I'd like to remind you that nobody volunteered to be a review manager yet. -- Alexander Nasonov http://nasonov.blogspot.com Every difference of opinion is not a difference of principle. We have called by different names brethren of the same principle. -- Thomas Jefferson -- This quote is generated by: /usr/pkg/bin/curl -L http://tinyurl.com/veusy \ | sed -e 's/^document\.write(.//' -e 's/.);$/ --/' \ -e 's/<[^>]*>//g' -e 's/^More quotes from //' \ | fmt | tee ~/.signature-quote

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[proto-implementation]why proto::arg##N vs. mpl::vector##N
by Larry Evans 19 Apr '07

19 Apr '07

Hi, Eric. Could you tell me why isn't mpl::vector##N reused instead of proto::arg##N, which, AFAICT, is almost the same? TIA. -regards, Larry

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Re: [boost] Bug in sp_counted_base and atomic_count?
by Dmitriy V'jukov 19 Apr '07

19 Apr '07

Peter Dimov wrote: > There's also a hidden ordinary store to the vtable pointer. In general, when > passing an object X from thread A to thread B, you are expected to ensure > the necessary visibility (and not the author of X). Usually the queue that > you're using for message passing will contain the acquire/release pair in > pop/push. Otherwise you wouldn't be able to pass ordinary objects between > threads. Or to take a simple example: Thank you very much. Now I understand. I underestimate the "pass to another thread" procedure, that must contain all necessary fences to ensure visibility of counter variable. Dmitriy V'jukov

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Boost inspection notification (2007-04-19/RC_1_34_0) *LC*
by Rene Rivera 19 Apr '07

19 Apr '07

Boost Inspection Report Run Date: 16:05:31 UTC, Thursday 19 April 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11450 files scanned 908 directories scanned (including root) 1051 problems reported Problem counts: 653 files missing Boost license info or having wrong reference text 398 files missing copyright notice Summary: any (1) archive (1) build (68) concept_check (22) conversion (5) doc (1) filesystem (2) function (1) graph (1) inspect (1) integer (9) lambda (10) libs (6) logic (2) math (1) more (13) mpl (417) multi_array (13) numeric (188) optional (1) people (4) program_options (35) property_map (15) ptr_container (8) python (6) rational (5) regex (4) regression (118) release (2) serialization (16) signals (2) smart_ptr (8) test (3) timer (1) tr1 (2) tuple (5) utility (12) variant (42) Details: *L* missing Boost license info, or wrong reference text *C* missing copyright notice |any| libs/any/doc/ any.xml: *L* |archive| boost/archive/detail/ utf8_codecvt_facet.hpp: *L* |build| tools/build/v2/build/ build-request.jam: *L* modifiers.jam: *L* tools/build/v2/doc/ Jamfile.v2: *C* *L* 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Boost inspection notification (2007-04-19/RC_1_34_0) *X*
by Rene Rivera 19 Apr '07

19 Apr '07

Boost Inspection Report Run Date: 16:05:25 UTC, Thursday 19 April 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11450 files scanned 908 directories scanned (including root) 198 problems reported Problem counts: 0 files with invalid line endings 0 bookmarks with invalid characters 3 invalid urls 107 broken links 21 unlinked files 22 file/directory names issues 1 files with tabs 9 violations of the Boost min/max guidelines 35 usages of unnamed namespaces in headers (including .ipp files) Summary: archive (3) bind (1) boost-root (3) build (1) date_time (1) doc (2) filesystem (37) graph (2) iostreams (3) lambda (3) math (8) more (1) mpl (4) multi_array (2) ptr_container (1) python (10) regex (1) regression (32) serialization (1) test (81) type_traits (1) Details: *R* invalid (cr only) line-ending *A* invalid bookmarks, invalid urls, broken links, unlinked files *N* file/directory names issues *T* tabs in file *M* uses of min or max that have not been protected from the min/max macros, or unallowed #undef-s *U* unnamed namespace in header |archive| boost/archive/basic_streambuf_locale_saver.hpp: *N* name exceeds 31 characters boost/archive/impl/xml_wiarchive_impl.ipp: *U* unnamed namespace at line 53 boost/archive/iterators/remove_whitespace.hpp: *U* unnamed namespace at line 57 |bind| boost/bind/placeholders.hpp: *U* unnamed namespace at line 25 |boost-root| index.htm: *A* broken link: doc/hmtl/date_time.html *A* broken link: doc/hmtl/date_time/details.html#changes *A* broken link: more/BoostCon07.html |build| tools/build/v2/test/test_system.html: *A* unlinked file |date_time| libs/date_time/xmldoc/date_time_docs_howto.html: *A* unlinked file |doc| doc/html/boost_math/inverse_complex.html: *A* unlinked file doc/html/jam.html: *A* unlinked file |filesystem| libs/filesystem/doc/do-list.htm: *A* invalid URL (hardwired file): file://?/ *A* invalid URL (hardwired file): file://?/UNC/ libs/filesystem/doc/i18n.html: *A* broken link: convenience.htm#basic_recursive_directory_iterator *A* broken link: exception.htm *A* broken link: operations.htm *A* broken link: operations.htm#Do-the-right-thing *A* broken link: operations.htm#is_directory *A* broken link: operations.htm#is_file *A* broken link: operations.htm#status libs/filesystem/doc/index.htm: *A* broken link: ../build/Jamfile *A* broken link: convenience.htm *A* broken link: fstream.htm *A* broken link: operations.htm#create_directory *A* broken link: operations.htm#create_hard_link *A* broken link: operations.htm#current_path *A* broken link: operations.htm#directory_iterator *A* broken link: operations.htm#equivalent *A* broken link: operations.htm#file_size *A* broken link: operations.htm#initial_path *A* broken link: operations.htm#is_file *A* broken link: operations.htm#is_symlink *A* broken link: operations.htm#status *A* broken link: operations.htm#symlink_status *A* broken link: path.htm#Canonical *A* broken link: path.htm#Grammar *A* broken link: path.htm#Normalized *A* broken link: path.htm#default_name_check *A* broken link: path.htm#name_check_mechanism *A* broken link: path.htm#normalize *A* broken link: path.htm#operator_eq *A* broken link: path.htm#synopsis libs/filesystem/doc/portability_guide.htm: *A* broken link: path.htm#name_check_typedef libs/filesystem/doc/tr2_proposal.html: *A* invalid URL (hardwired file): file:///C|/boost/site/libs/filesystem/doc/operations.htm#complete_note |graph| libs/graph/example/file_dependencies.cpp: *M* violation of Boost min/max guidelines on line 139 libs/graph/test/serialize.cpp: *T* |iostreams| libs/iostreams/doc/acknowledgments.html: *A* unlinked file libs/iostreams/doc/concepts/multi-character.html: *A* unlinked file libs/iostreams/doc/installation.html: *A* broken link: ../../../tools/build/v1/build_system.htm |lambda| boost/lambda/core.hpp: *U* unnamed namespace at line 62 boost/lambda/detail/lambda_functors.hpp: *U* unnamed namespace at line 25 boost/lambda/exceptions.hpp: *U* unnamed namespace at line 24 |math| libs/math/test/common_factor_test.cpp: *M* violation of Boost min/max guidelines on line 146 *M* violation of Boost min/max guidelines on line 147 *M* violation of Boost min/max guidelines on line 193 *M* violation of Boost min/max guidelines on line 194 |more| more/separate_compilation.html: *A* broken link: ../libs/config/test/link/test/Jamfile.v2 |mpl| boost/mpl/alias.hpp: *U* unnamed namespace at line 17 libs/mpl/doc/refmanual/for-each.html: *A* broken link: ./value-initialized.html |multi_array| boost/multi_array/base.hpp: *U* unnamed namespace at line 69 libs/multi_array/test/generative_tests.hpp: *U* unnamed namespace at line 57 |ptr_container| libs/ptr_container/doc/tutorial_example.html: *A* unlinked file |python| libs/python/doc/building.html: *A* broken link: ../../../tools/build/v1/build_system.htm *A* broken link: ../../../tools/build/v1/build_system.htm#user_globals *A* broken link: ../../../tools/build/v1/build_system.htm#variants libs/python/doc/tutorial/doc/html/python/hello.html: *A* broken link: ../../../../../example/tutorial/Jamrules libs/python/doc/tutorial/index.html: *A* broken link: ../../../LICENSE_1_0.txt libs/python/doc/v2/May2002.html: *A* broken link: ../../../../tools/build/v1/build_system.htm *A* broken link: ../../../../tools/build/v1/gen_aix_import_file.py libs/python/doc/v2/faq.html: *A* broken link: ../../../../tools/build/v1/build_system.htm |regex| libs/regex/performance/input.html: *A* unlinked file |regression| regression/.htaccess: *N* leading character of ".htaccess" is not alphabetic tools/regression/test/test-cases/incremental/bjam.log.1: *N* name contains more than one dot character ('.') tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/compile-fail.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/completed.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/compile-fail.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/completed.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/lib.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/misfire.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/no-run.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/run_pyd.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/test-case.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/test-case.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/test-driver.xsl: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_re_match/expected/test_re_match.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_test_case_status/explicit-failures-markup.xml.test: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ *N* name contains more than one dot character ('.') *N* name exceeds 31 characters tools/regression/xsl_reports/test/test-components/test_test_structure/explicit-failures-markup.xml.test: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ *N* name contains more than one dot character ('.') *N* name exceeds 31 characters tools/regression/xsl_reports/xsl/html/issues_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/library_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/library_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/make_tinyurl.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/summary_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/summary_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/issues_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/library_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/library_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/make_tinyurl.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/summary_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/summary_user_legend.html: *A* unlinked file |serialization| libs/serialization/src/basic_xml_grammar.ipp: *U* unnamed namespace at line 43 |test| boost/test/floating_point_comparison.hpp: *U* unnamed namespace at line 206 *U* unnamed namespace at line 228 boost/test/impl/cpp_main.ipp: *U* unnamed namespace at line 42 boost/test/impl/exception_safety.ipp: *U* unnamed namespace at line 400 boost/test/impl/framework.ipp: *U* unnamed namespace at line 199 boost/test/impl/plain_report_formatter.ipp: *U* unnamed namespace at line 45 boost/test/impl/progress_monitor.ipp: *U* unnamed namespace at line 38 boost/test/impl/results_collector.ipp: *U* unnamed namespace at line 106 boost/test/impl/results_reporter.ipp: *U* unnamed namespace at line 48 boost/test/impl/unit_test_log.ipp: *U* unnamed namespace at line 79 boost/test/impl/unit_test_monitor.ipp: *U* unnamed namespace at line 35 boost/test/impl/unit_test_parameters.ipp: *U* unnamed namespace at line 50 boost/test/results_collector.hpp: *U* unnamed namespace at line 40 boost/test/test_tools.hpp: *U* unnamed namespace at line 262 boost/test/utils/iterator/token_iterator.hpp: *U* unnamed namespace at line 166 boost/test/utils/named_params.hpp: *U* unnamed namespace at line 216 boost/test/utils/runtime/cla/dual_name_parameter.ipp: *U* unnamed namespace at line 43 boost/test/utils/runtime/cla/modifier.hpp: *U* unnamed namespace at line 34 boost/test/utils/runtime/env/modifier.hpp: *U* unnamed namespace at line 34 boost/test/utils/runtime/file/config_file.hpp: *U* unnamed namespace at line 169 *U* unnamed namespace at line 64 *U* unnamed namespace at line 74 boost/test/utils/runtime/file/config_file_iterator.hpp: *U* unnamed namespace at line 68 boost/test/utils/trivial_singleton.hpp: *U* unnamed namespace at line 52 *U* unnamed namespace at line 61 libs/test/build/msvc71_proj/config_file_iterator_test.vcproj: *N* name exceeds 31 characters libs/test/doc/components/prg_exec_monitor/compilation.html: *A* broken link: ../../../build/Jamfile libs/test/doc/components/prg_exec_monitor/index.html: *A* broken link: ../../../../../boost/test/cpp_main.hpp libs/test/doc/components/test_tools/index.html: *A* broken link: ../../tests/boost_check_equal_str.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_CLOSE.html: *A* broken link: BOOST_CHECK_CLOSE_FRACTION.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_MESSAGE.html: *A* broken link: 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is there a boost "storable_type"?
by Stjepan Rajko 19 Apr '07

19 Apr '07

Hi, I am wondering if there is a construct in boost which, given a type T, returns the underlying "storable" type - say if T is int & the "storable_type" should be int. I'm not sure if the word "storable" is the best word... The scenario I am facing is making a function call that takes a parameter of type T, where I need to prepare the parameter before calling (specifically, deserializing it from an archive). Hence, as far as I can tell, I need to declare a variable of the underlying storable type, and get the right value inside it. So far, I've been using: template<typename T> struct storable : public boost::remove_const<typename boost::remove_reference<T>::type > {}; but I'm not sure if that cuts it in all situations. In any case, I figured the right thing might be in Boost already and I just haven't found it. Any suggestions? Thanks! Stjepan

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