Commit Graph

23 Commits

Author SHA1 Message Date
Marshall Clow 90ba0533cd Fix PR#202520 - predicate called too many times in list::remove_if. Add tests for list, forward_list, and the std::remove_if algorithm
llvm-svn: 214736
2014-08-04 17:32:25 +00:00
David Majnemer 8b51260274 Fix std::make_heap's worst case time complexity
std::make_heap is currently implemented by iteratively applying a
siftup-type algorithm.  Since sift-up is O(ln n), this gives
std::make_heap a worst case time complexity of O(n ln n).

The C++ standard mandates that std::make_heap make no more than O(3n)
comparisons, this makes our std::make_heap out of spec.

Fix this by introducing an implementation of __sift_down and switch
std::make_heap to create the heap using it.
This gives std::make_heap linear time complexity in the worst case.

This fixes PR20161.

llvm-svn: 213615
2014-07-22 06:07:09 +00:00
Marshall Clow 3484495b3d Add checking for the complexity guarantees in the standard
llvm-svn: 212017
2014-06-30 05:04:20 +00:00
Nico Weber ded9de5981 fix typo
llvm-svn: 209819
2014-05-29 14:58:38 +00:00
Marshall Clow af236d36fb Fix bug 19840, where some tests were not testing what we wanted. Thanks to Eric for the bug report
llvm-svn: 209520
2014-05-23 15:30:23 +00:00
Marshall Clow 190cc60a2d Added some tests for equal elements in min_element and max_element. Bug #19547 was invalid, but we weren't testing that case
llvm-svn: 207232
2014-04-25 15:50:54 +00:00
Marshall Clow 4ab4534964 More LWG issues. Mark #2182, #2323 and #2213 as complete. Add a test for #2339, and mark that as complete. No actual changes to the libc++ code; all of these were already in place.
llvm-svn: 202407
2014-02-27 16:13:36 +00:00
Marshall Clow 9d67c6d5fd Implement LWG2350: min, max, and minmax should be constexpr.
llvm-svn: 201697
2014-02-19 16:51:35 +00:00
Howard Hinnant 0f242bea10 Taking another swing at correctly optimizing fill_n.
llvm-svn: 187587
2013-08-01 17:29:28 +00:00
Anders Carlsson 8bb1dbbf75 Fix a bug in std::fill_n where memset would end up being called in cases when it shouldn’t.
Reviewed by Howard.

llvm-svn: 186875
2013-07-22 21:08:00 +00:00
Howard Hinnant e0fe3d2e96 War on tabs.
llvm-svn: 185865
2013-07-08 21:06:38 +00:00
Marshall Clow 0b0bbd2f22 Implement n3607: 'equal', 'mismatch', and 'is_permutation'
llvm-svn: 181548
2013-05-09 21:14:23 +00:00
Howard Hinnant b13fcad677 Somehow search_n never got tested, so of course it had a bug in it. This fixes http://llvm.org/bugs/show_bug.cgi?id=15667.
llvm-svn: 178764
2013-04-04 15:40:48 +00:00
Marshall Clow 322270842c Move common header files into a 'support' directory; make 'testit' include -I to that directory; rename 'iterators.h' to 'iterator_test.h'; remove hard-coded paths to include files from more than 350 source files
llvm-svn: 171594
2013-01-05 03:21:01 +00:00
Marshall Clow f8c2b82337 ...and then there was one. Only one copy of 'iterators.h' in the test tree for libc++
llvm-svn: 171479
2013-01-04 18:24:04 +00:00
Howard Hinnant 54976f2619 Fixed PR10574: http://llvm.org/bugs/show_bug.cgi?id=10574
llvm-svn: 137522
2011-08-12 21:56:02 +00:00
Howard Hinnant 412dbebe1b license change
llvm-svn: 119395
2010-11-16 22:09:02 +00:00
Howard Hinnant 7609c9b665 Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature.
llvm-svn: 113086
2010-09-04 23:28:19 +00:00
Howard Hinnant 664ae8118e Fixing whitespace problems
llvm-svn: 111753
2010-08-22 00:08:10 +00:00
Howard Hinnant 4eb27b79c1 US 122, N3106
llvm-svn: 111742
2010-08-21 20:10:01 +00:00
Howard Hinnant f9d540b062 Completed [alg.random.shuffle].
llvm-svn: 104708
2010-05-26 17:49:34 +00:00
Howard Hinnant 5b08a8a432 Wiped out some non-ascii characters that snuck into the copyright.
llvm-svn: 103516
2010-05-11 21:36:01 +00:00
Howard Hinnant 3e519524c1 libcxx initial import
llvm-svn: 103490
2010-05-11 19:42:16 +00:00