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update boost on linux

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This commit is contained in:
Bassem Girgis
2019-08-10 16:06:25 -05:00
parent 76ad52be58
commit 861b918727
5363 changed files with 483306 additions and 116507 deletions
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1686
linx64/include/boost/move/algo/detail/adaptive_sort_merge.hpp
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20
linx64/include/boost/move/algo/detail/basic_op.hpp
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@@ -35,19 +35,19 @@ struct four_way_t{};
struct move_op
{
template <class SourceIt, class DestinationIt>
void operator()(SourceIt source, DestinationIt dest)
BOOST_MOVE_FORCEINLINE void operator()(SourceIt source, DestinationIt dest)
{ *dest = ::boost::move(*source); }
template <class SourceIt, class DestinationIt>
DestinationIt operator()(forward_t, SourceIt first, SourceIt last, DestinationIt dest_begin)
BOOST_MOVE_FORCEINLINE DestinationIt operator()(forward_t, SourceIt first, SourceIt last, DestinationIt dest_begin)
{ return ::boost::move(first, last, dest_begin); }
template <class SourceIt, class DestinationIt>
DestinationIt operator()(backward_t, SourceIt first, SourceIt last, DestinationIt dest_last)
BOOST_MOVE_FORCEINLINE DestinationIt operator()(backward_t, SourceIt first, SourceIt last, DestinationIt dest_last)
{ return ::boost::move_backward(first, last, dest_last); }
template <class SourceIt, class DestinationIt1, class DestinationIt2>
void operator()(three_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it)
BOOST_MOVE_FORCEINLINE void operator()(three_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it)
{
*dest2it = boost::move(*dest1it);
*dest1it = boost::move(*srcit);
@@ -64,7 +64,7 @@ struct move_op
}
template <class SourceIt, class DestinationIt1, class DestinationIt2, class DestinationIt3>
void operator()(four_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it, DestinationIt3 dest3it)
BOOST_MOVE_FORCEINLINE void operator()(four_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it, DestinationIt3 dest3it)
{
*dest3it = boost::move(*dest2it);
*dest2it = boost::move(*dest1it);
@@ -75,19 +75,19 @@ struct move_op
struct swap_op
{
template <class SourceIt, class DestinationIt>
void operator()(SourceIt source, DestinationIt dest)
BOOST_MOVE_FORCEINLINE void operator()(SourceIt source, DestinationIt dest)
{ boost::adl_move_swap(*dest, *source); }
template <class SourceIt, class DestinationIt>
DestinationIt operator()(forward_t, SourceIt first, SourceIt last, DestinationIt dest_begin)
BOOST_MOVE_FORCEINLINE DestinationIt operator()(forward_t, SourceIt first, SourceIt last, DestinationIt dest_begin)
{ return boost::adl_move_swap_ranges(first, last, dest_begin); }
template <class SourceIt, class DestinationIt>
DestinationIt operator()(backward_t, SourceIt first, SourceIt last, DestinationIt dest_begin)
BOOST_MOVE_FORCEINLINE DestinationIt operator()(backward_t, SourceIt first, SourceIt last, DestinationIt dest_begin)
{ return boost::adl_move_swap_ranges_backward(first, last, dest_begin); }
template <class SourceIt, class DestinationIt1, class DestinationIt2>
void operator()(three_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it)
BOOST_MOVE_FORCEINLINE void operator()(three_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it)
{
typename ::boost::movelib::iterator_traits<SourceIt>::value_type tmp(boost::move(*dest2it));
*dest2it = boost::move(*dest1it);
@@ -105,7 +105,7 @@ struct swap_op
}
template <class SourceIt, class DestinationIt1, class DestinationIt2, class DestinationIt3>
void operator()(four_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it, DestinationIt3 dest3it)
BOOST_MOVE_FORCEINLINE void operator()(four_way_t, SourceIt srcit, DestinationIt1 dest1it, DestinationIt2 dest2it, DestinationIt3 dest3it)
{
typename ::boost::movelib::iterator_traits<SourceIt>::value_type tmp(boost::move(*dest3it));
*dest3it = boost::move(*dest2it);

111
linx64/include/boost/move/algo/detail/heap_sort.hpp Normal file
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@@ -0,0 +1,111 @@
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2017-2018.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/move for documentation.
//
//////////////////////////////////////////////////////////////////////////////
//! \file
#ifndef BOOST_MOVE_DETAIL_HEAP_SORT_HPP
#define BOOST_MOVE_DETAIL_HEAP_SORT_HPP
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include <boost/move/detail/config_begin.hpp>
#include <boost/move/detail/workaround.hpp>
#include <boost/move/detail/iterator_traits.hpp>
#include <boost/move/algo/detail/is_sorted.hpp>
#include <boost/move/utility_core.hpp>
namespace boost { namespace movelib{
template <class RandomAccessIterator, class Compare>
class heap_sort_helper
{
typedef typename boost::movelib::iterator_traits<RandomAccessIterator>::size_type size_type;
typedef typename boost::movelib::iterator_traits<RandomAccessIterator>::value_type value_type;
static void adjust_heap(RandomAccessIterator first, size_type hole_index, size_type const len, value_type &value, Compare comp)
{
size_type const top_index = hole_index;
size_type second_child = 2 * (hole_index + 1);
while (second_child < len) {
if (comp(*(first + second_child), *(first + (second_child - 1))))
second_child--;
*(first + hole_index) = boost::move(*(first + second_child));
hole_index = second_child;
second_child = 2 * (second_child + 1);
}
if (second_child == len) {
*(first + hole_index) = boost::move(*(first + (second_child - 1)));
hole_index = second_child - 1;
}
{ //push_heap-like ending
size_type parent = (hole_index - 1) / 2;
while (hole_index > top_index && comp(*(first + parent), value)) {
*(first + hole_index) = boost::move(*(first + parent));
hole_index = parent;
parent = (hole_index - 1) / 2;
}
*(first + hole_index) = boost::move(value);
}
}
static void make_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp)
{
size_type const len = size_type(last - first);
if (len > 1) {
size_type parent = len/2u - 1u;
do {
value_type v(boost::move(*(first + parent)));
adjust_heap(first, parent, len, v, comp);
}while (parent--);
}
}
static void sort_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp)
{
size_type len = size_type(last - first);
while (len > 1) {
//move biggest to the safe zone
--last;
value_type v(boost::move(*last));
*last = boost::move(*first);
adjust_heap(first, size_type(0), --len, v, comp);
}
}
public:
static void sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp)
{
make_heap(first, last, comp);
sort_heap(first, last, comp);
BOOST_ASSERT(boost::movelib::is_sorted(first, last, comp));
}
};
template <class RandomAccessIterator, class Compare>
BOOST_MOVE_FORCEINLINE void heap_sort(RandomAccessIterator first, RandomAccessIterator last, Compare comp)
{
heap_sort_helper<RandomAccessIterator, Compare>::sort(first, last, comp);
}
}} //namespace boost { namespace movelib{
#include <boost/move/detail/config_end.hpp>
#endif //#ifndef BOOST_MOVE_DETAIL_HEAP_SORT_HPP

23
linx64/include/boost/move/algo/detail/insertion_sort.hpp
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@@ -31,6 +31,7 @@
#include <boost/move/detail/destruct_n.hpp>
#include <boost/move/algo/detail/basic_op.hpp>
#include <boost/move/detail/placement_new.hpp>
#include <boost/move/detail/iterator_to_raw_pointer.hpp>
namespace boost { namespace movelib{
@@ -91,30 +92,30 @@ void insertion_sort(BirdirectionalIterator first, BirdirectionalIterator last, C
}
}
template <class Compare, class BirdirectionalIterator>
template <class Compare, class BirdirectionalIterator, class BirdirectionalRawIterator>
void insertion_sort_uninitialized_copy
(BirdirectionalIterator first1, BirdirectionalIterator const last1
, typename iterator_traits<BirdirectionalIterator>::value_type* const first2
, BirdirectionalRawIterator const first2
, Compare comp)
{
typedef typename iterator_traits<BirdirectionalIterator>::value_type value_type;
if (first1 != last1){
value_type* last2 = first2;
::new(last2, boost_move_new_t()) value_type(move(*first1));
destruct_n<value_type> d(first2);
BirdirectionalRawIterator last2 = first2;
::new((iterator_to_raw_pointer)(last2), boost_move_new_t()) value_type(::boost::move(*first1));
destruct_n<value_type, BirdirectionalRawIterator> d(first2);
d.incr();
for (++last2; ++first1 != last1; ++last2){
value_type* j2 = last2;
value_type* k2 = j2;
BirdirectionalRawIterator j2 = last2;
BirdirectionalRawIterator k2 = j2;
if (comp(*first1, *--k2)){
::new(j2, boost_move_new_t()) value_type(move(*k2));
::new((iterator_to_raw_pointer)(j2), boost_move_new_t()) value_type(::boost::move(*k2));
d.incr();
for (--j2; k2 != first2 && comp(*first1, *--k2); --j2)
*j2 = move(*k2);
*j2 = move(*first1);
*j2 = ::boost::move(*k2);
*j2 = ::boost::move(*first1);
}
else{
::new(j2, boost_move_new_t()) value_type(move(*first1));
::new((iterator_to_raw_pointer)(j2), boost_move_new_t()) value_type(::boost::move(*first1));
d.incr();
}
}

55
linx64/include/boost/move/algo/detail/is_sorted.hpp Normal file
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@@ -0,0 +1,55 @@
#ifndef BOOST_MOVE_DETAIL_IS_SORTED_HPP
#define BOOST_MOVE_DETAIL_IS_SORTED_HPP
///////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2017-2018. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
namespace boost {
namespace movelib {
template<class ForwardIt, class Pred>
bool is_sorted(ForwardIt const first, ForwardIt last, Pred pred)
{
if (first != last) {
ForwardIt next = first, cur(first);
while (++next != last) {
if (pred(*next, *cur))
return false;
cur = next;
}
}
return true;
}
template<class ForwardIt, class Pred>
bool is_sorted_and_unique(ForwardIt first, ForwardIt last, Pred pred)
{
if (first != last) {
ForwardIt next = first;
while (++next != last) {
if (!pred(*first, *next))
return false;
first = next;
}
}
return true;
}
} //namespace movelib {
} //namespace boost {
#endif //BOOST_MOVE_DETAIL_IS_SORTED_HPP

655
linx64/include/boost/move/algo/detail/merge.hpp
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@@ -16,11 +16,266 @@
#include <boost/move/algo/detail/basic_op.hpp>
#include <boost/move/detail/iterator_traits.hpp>
#include <boost/move/detail/destruct_n.hpp>
#include <boost/move/algo/predicate.hpp>
#include <boost/move/detail/iterator_to_raw_pointer.hpp>
#include <boost/assert.hpp>
#include <cstddef>
namespace boost {
namespace movelib {
template<class T, class RandRawIt = T*, class SizeType = typename iterator_traits<RandRawIt>::size_type>
class adaptive_xbuf
{
adaptive_xbuf(const adaptive_xbuf &);
adaptive_xbuf & operator=(const adaptive_xbuf &);
#if !defined(UINTPTR_MAX)
typedef std::size_t uintptr_t;
#endif
public:
typedef RandRawIt iterator;
typedef SizeType size_type;
adaptive_xbuf()
: m_ptr(), m_size(0), m_capacity(0)
{}
adaptive_xbuf(RandRawIt raw_memory, size_type capacity)
: m_ptr(raw_memory), m_size(0), m_capacity(capacity)
{}
template<class RandIt>
void move_assign(RandIt first, size_type n)
{
if(n <= m_size){
boost::move(first, first+n, m_ptr);
size_type size = m_size;
while(size-- != n){
m_ptr[size].~T();
}
m_size = n;
}
else{
RandRawIt result = boost::move(first, first+m_size, m_ptr);
boost::uninitialized_move(first+m_size, first+n, result);
m_size = n;
}
}
template<class RandIt>
void push_back(RandIt first, size_type n)
{
BOOST_ASSERT(m_capacity - m_size >= n);
boost::uninitialized_move(first, first+n, m_ptr+m_size);
m_size += n;
}
template<class RandIt>
iterator add(RandIt it)
{
BOOST_ASSERT(m_size < m_capacity);
RandRawIt p_ret = m_ptr + m_size;
::new(&*p_ret) T(::boost::move(*it));
++m_size;
return p_ret;
}
template<class RandIt>
void insert(iterator pos, RandIt it)
{
if(pos == (m_ptr + m_size)){
this->add(it);
}
else{
this->add(m_ptr+m_size-1);
//m_size updated
boost::move_backward(pos, m_ptr+m_size-2, m_ptr+m_size-1);
*pos = boost::move(*it);
}
}
void set_size(size_type size)
{
m_size = size;
}
void shrink_to_fit(size_type const size)
{
if(m_size > size){
for(size_type szt_i = size; szt_i != m_size; ++szt_i){
m_ptr[szt_i].~T();
}
m_size = size;
}
}
void initialize_until(size_type const size, T &t)
{
BOOST_ASSERT(m_size < m_capacity);
if(m_size < size){
BOOST_TRY
{
::new((void*)&m_ptr[m_size]) T(::boost::move(t));
++m_size;
for(; m_size != size; ++m_size){
::new((void*)&m_ptr[m_size]) T(::boost::move(m_ptr[m_size-1]));
}
t = ::boost::move(m_ptr[m_size-1]);
}
BOOST_CATCH(...)
{
while(m_size)
{
--m_size;
m_ptr[m_size].~T();
}
}
BOOST_CATCH_END
}
}
private:
template<class RIt>
static bool is_raw_ptr(RIt)
{
return false;
}
static bool is_raw_ptr(T*)
{
return true;
}
public:
template<class U>
bool supports_aligned_trailing(size_type size, size_type trail_count) const
{
if(this->is_raw_ptr(this->data()) && m_capacity){
uintptr_t u_addr_sz = uintptr_t(&*(this->data()+size));
uintptr_t u_addr_cp = uintptr_t(&*(this->data()+this->capacity()));
u_addr_sz = ((u_addr_sz + sizeof(U)-1)/sizeof(U))*sizeof(U);
return (u_addr_cp >= u_addr_sz) && ((u_addr_cp - u_addr_sz)/sizeof(U) >= trail_count);
}
return false;
}
template<class U>
U *aligned_trailing() const
{
return this->aligned_trailing<U>(this->size());
}
template<class U>
U *aligned_trailing(size_type pos) const
{
uintptr_t u_addr = uintptr_t(&*(this->data()+pos));
u_addr = ((u_addr + sizeof(U)-1)/sizeof(U))*sizeof(U);
return (U*)u_addr;
}
~adaptive_xbuf()
{
this->clear();
}
size_type capacity() const
{ return m_capacity; }
iterator data() const
{ return m_ptr; }
iterator begin() const
{ return m_ptr; }
iterator end() const
{ return m_ptr+m_size; }
size_type size() const
{ return m_size; }
bool empty() const
{ return !m_size; }
void clear()
{
this->shrink_to_fit(0u);
}
private:
RandRawIt m_ptr;
size_type m_size;
size_type m_capacity;
};
template<class Iterator, class SizeType, class Op>
class range_xbuf
{
range_xbuf(const range_xbuf &);
range_xbuf & operator=(const range_xbuf &);
public:
typedef SizeType size_type;
typedef Iterator iterator;
range_xbuf(Iterator first, Iterator last)
: m_first(first), m_last(first), m_cap(last)
{}
template<class RandIt>
void move_assign(RandIt first, size_type n)
{
BOOST_ASSERT(size_type(n) <= size_type(m_cap-m_first));
m_last = Op()(forward_t(), first, first+n, m_first);
}
~range_xbuf()
{}
size_type capacity() const
{ return m_cap-m_first; }
Iterator data() const
{ return m_first; }
Iterator end() const
{ return m_last; }
size_type size() const
{ return m_last-m_first; }
bool empty() const
{ return m_first == m_last; }
void clear()
{
m_last = m_first;
}
template<class RandIt>
iterator add(RandIt it)
{
Iterator pos(m_last);
*pos = boost::move(*it);
++m_last;
return pos;
}
void set_size(size_type size)
{
m_last = m_first;
m_last += size;
}
private:
Iterator const m_first;
Iterator m_last;
Iterator const m_cap;
};
// @cond
/*
@@ -181,9 +436,6 @@ void op_merge_left( RandIt buf_first
//and all elements from the second half are less)
op(forward_t(), first1, last1, buf_first);
}
else{
buf_first = buf_first;
}
}
// [buf_first, first1) -> buffer
@@ -257,99 +509,43 @@ void swap_merge_right
op_merge_right(first1, last1, last2, buf_last, comp, swap_op());
}
template <class BidirIt, class Distance, class Compare>
void merge_bufferless_ONlogN_recursive
(BidirIt first, BidirIt middle, BidirIt last, Distance len1, Distance len2, Compare comp)
///////////////////////////////////////////////////////////////////////////////
//
// BUFFERED MERGE
//
///////////////////////////////////////////////////////////////////////////////
template<class RandIt, class Compare, class Op, class Buf>
void op_buffered_merge
( RandIt first, RandIt const middle, RandIt last
, Compare comp, Op op
, Buf &xbuf)
{
typedef typename iterator_traits<BidirIt>::size_type size_type;
while(1) {
//#define MERGE_BUFFERLESS_RECURSIVE_OPT
#ifndef MERGE_BUFFERLESS_RECURSIVE_OPT
if (len2 == 0) {
return;
if(first != middle && middle != last && comp(*middle, middle[-1])){
typedef typename iterator_traits<RandIt>::size_type size_type;
size_type const len1 = size_type(middle-first);
size_type const len2 = size_type(last-middle);
if(len1 <= len2){
first = boost::movelib::upper_bound(first, middle, *middle, comp);
xbuf.move_assign(first, size_type(middle-first));
op_merge_with_right_placed
(xbuf.data(), xbuf.end(), first, middle, last, comp, op);
}
if (!len1) {
return;
}
if ((len1 | len2) == 1) {
if (comp(*middle, *first))
adl_move_swap(*first, *middle);
return;
}
#else
if (len2 == 0) {
return;
}
if (!len1) {
return;
}
BidirIt middle_prev = middle; --middle_prev;
if(!comp(*middle, *middle_prev))
return;
while(true) {
if (comp(*middle, *first))
break;
++first;
if(--len1 == 1)
break;
}
if (len1 == 1 && len2 == 1) {
//comp(*middle, *first) == true already tested in the loop
adl_move_swap(*first, *middle);
return;
}
#endif
BidirIt first_cut = first;
BidirIt second_cut = middle;
Distance len11 = 0;
Distance len22 = 0;
if (len1 > len2) {
len11 = len1 / 2;
first_cut += len11;
second_cut = lower_bound(middle, last, *first_cut, comp);
len22 = size_type(second_cut - middle);
}
else {
len22 = len2 / 2;
second_cut += len22;
first_cut = upper_bound(first, middle, *second_cut, comp);
len11 = size_type(first_cut - first);
}
BidirIt new_middle = rotate_gcd(first_cut, middle, second_cut);
//Avoid one recursive call doing a manual tail call elimination on the biggest range
const Distance len_internal = len11+len22;
if( len_internal < (len1 + len2 - len_internal) ) {
merge_bufferless_ONlogN_recursive(first, first_cut, new_middle, len11, len22, comp);
//merge_bufferless_recursive(new_middle, second_cut, last, len1 - len11, len2 - len22, comp);
first = new_middle;
middle = second_cut;
len1 -= len11;
len2 -= len22;
}
else {
//merge_bufferless_recursive(first, first_cut, new_middle, len11, len22, comp);
merge_bufferless_ONlogN_recursive(new_middle, second_cut, last, len1 - len11, len2 - len22, comp);
middle = first_cut;
last = new_middle;
len1 = len11;
len2 = len22;
else{
last = boost::movelib::lower_bound(middle, last, middle[-1], comp);
xbuf.move_assign(middle, size_type(last-middle));
op_merge_with_left_placed
(first, middle, last, xbuf.data(), xbuf.end(), comp, op);
}
}
}
//Complexity: NlogN
template<class BidirIt, class Compare>
void merge_bufferless_ONlogN(BidirIt first, BidirIt middle, BidirIt last, Compare comp)
template<class RandIt, class Compare, class XBuf>
void buffered_merge
( RandIt first, RandIt const middle, RandIt last
, Compare comp
, XBuf &xbuf)
{
merge_bufferless_ONlogN_recursive
(first, middle, last, middle - first, last - middle, comp);
op_buffered_merge(first, middle, last, comp, move_op(), xbuf);
}
//Complexity: min(len1,len2)^2 + max(len1,len2)
@@ -359,7 +555,7 @@ void merge_bufferless_ON2(RandIt first, RandIt middle, RandIt last, Compare comp
if((middle - first) < (last - middle)){
while(first != middle){
RandIt const old_last1 = middle;
middle = lower_bound(middle, last, *first, comp);
middle = boost::movelib::lower_bound(middle, last, *first, comp);
first = rotate_gcd(first, old_last1, middle);
if(middle == last){
break;
@@ -371,7 +567,7 @@ void merge_bufferless_ON2(RandIt first, RandIt middle, RandIt last, Compare comp
}
else{
while(middle != last){
RandIt p = upper_bound(first, middle, last[-1], comp);
RandIt p = boost::movelib::upper_bound(first, middle, last[-1], comp);
last = rotate_gcd(p, middle, last);
middle = p;
if(middle == first){
@@ -385,10 +581,86 @@ void merge_bufferless_ON2(RandIt first, RandIt middle, RandIt last, Compare comp
}
}
static const std::size_t MergeBufferlessONLogNRotationThreshold = 16u;
template <class RandIt, class Compare>
void merge_bufferless_ONlogN_recursive
( RandIt first, RandIt middle, RandIt last
, typename iterator_traits<RandIt>::size_type len1
, typename iterator_traits<RandIt>::size_type len2
, Compare comp)
{
typedef typename iterator_traits<RandIt>::size_type size_type;
while(1) {
//trivial cases
if (!len2) {
return;
}
else if (!len1) {
return;
}
else if (size_type(len1 | len2) == 1u) {
if (comp(*middle, *first))
adl_move_swap(*first, *middle);
return;
}
else if(size_type(len1+len2) < MergeBufferlessONLogNRotationThreshold){
merge_bufferless_ON2(first, middle, last, comp);
return;
}
RandIt first_cut = first;
RandIt second_cut = middle;
size_type len11 = 0;
size_type len22 = 0;
if (len1 > len2) {
len11 = len1 / 2;
first_cut += len11;
second_cut = boost::movelib::lower_bound(middle, last, *first_cut, comp);
len22 = size_type(second_cut - middle);
}
else {
len22 = len2 / 2;
second_cut += len22;
first_cut = boost::movelib::upper_bound(first, middle, *second_cut, comp);
len11 = size_type(first_cut - first);
}
RandIt new_middle = rotate_gcd(first_cut, middle, second_cut);
//Avoid one recursive call doing a manual tail call elimination on the biggest range
const size_type len_internal = len11+len22;
if( len_internal < (len1 + len2 - len_internal) ) {
merge_bufferless_ONlogN_recursive(first, first_cut, new_middle, len11, len22, comp);
first = new_middle;
middle = second_cut;
len1 -= len11;
len2 -= len22;
}
else {
merge_bufferless_ONlogN_recursive(new_middle, second_cut, last, len1 - len11, len2 - len22, comp);
middle = first_cut;
last = new_middle;
len1 = len11;
len2 = len22;
}
}
}
//Complexity: NlogN
template<class RandIt, class Compare>
void merge_bufferless_ONlogN(RandIt first, RandIt middle, RandIt last, Compare comp)
{
typedef typename iterator_traits<RandIt>::size_type size_type;
merge_bufferless_ONlogN_recursive
(first, middle, last, size_type(middle - first), size_type(last - middle), comp);
}
template<class RandIt, class Compare>
void merge_bufferless(RandIt first, RandIt middle, RandIt last, Compare comp)
{
//#define BOOST_ADAPTIVE_MERGE_NLOGN_MERGE
#define BOOST_ADAPTIVE_MERGE_NLOGN_MERGE
#ifdef BOOST_ADAPTIVE_MERGE_NLOGN_MERGE
merge_bufferless_ONlogN(first, middle, last, comp);
#else
@@ -396,65 +668,6 @@ void merge_bufferless(RandIt first, RandIt middle, RandIt last, Compare comp)
#endif //BOOST_ADAPTIVE_MERGE_NLOGN_MERGE
}
template<class Comp>
struct antistable
{
explicit antistable(Comp &comp)
: m_comp(comp)
{}
template<class U, class V>
bool operator()(const U &u, const V & v)
{ return !m_comp(v, u); }
private:
antistable & operator=(const antistable &);
Comp &m_comp;
};
template <class Comp>
class negate
{
public:
negate()
{}
explicit negate(Comp comp)
: m_comp(comp)
{}
template <class T1, class T2>
bool operator()(const T1& l, const T2& r)
{
return !m_comp(l, r);
}
private:
Comp m_comp;
};
template <class Comp>
class inverse
{
public:
inverse()
{}
explicit inverse(Comp comp)
: m_comp(comp)
{}
template <class T1, class T2>
bool operator()(const T1& l, const T2& r)
{
return m_comp(r, l);
}
private:
Comp m_comp;
};
// [r_first, r_last) are already in the right part of the destination range.
template <class Compare, class InputIterator, class InputOutIterator, class Op>
void op_merge_with_right_placed
@@ -525,7 +738,7 @@ void op_merge_with_left_placed
// @endcond
// [irst, last) are already in the right part of the destination range.
// [first, last) are already in the right part of the destination range.
template <class Compare, class BidirIterator, class BidirOutIterator>
void merge_with_left_placed
( BidirOutIterator const first, BidirOutIterator last, BidirOutIterator dest_last
@@ -557,12 +770,12 @@ void uninitialized_merge_with_right_placed
typedef typename iterator_traits<InputOutIterator>::value_type value_type;
InputOutIterator const original_r_first = r_first;
destruct_n<value_type> d(&*dest_first);
destruct_n<value_type, InputOutIterator> d(dest_first);
while ( first != last && dest_first != original_r_first ) {
if (r_first == r_last) {
for(; dest_first != original_r_first; ++dest_first, ++first){
::new(&*dest_first) value_type(::boost::move(*first));
::new((iterator_to_raw_pointer)(dest_first)) value_type(::boost::move(*first));
d.incr();
}
d.release();
@@ -572,12 +785,12 @@ void uninitialized_merge_with_right_placed
return;
}
else if (comp(*r_first, *first)) {
::new(&*dest_first) value_type(::boost::move(*r_first));
::new((iterator_to_raw_pointer)(dest_first)) value_type(::boost::move(*r_first));
d.incr();
++r_first;
}
else {
::new(&*dest_first) value_type(::boost::move(*first));
::new((iterator_to_raw_pointer)(dest_first)) value_type(::boost::move(*first));
d.incr();
++first;
}
@@ -631,6 +844,136 @@ void uninitialized_merge_with_left_placed
}
*/
/// This is a helper function for the merge routines.
template<typename BidirectionalIterator1, typename BidirectionalIterator2>
BidirectionalIterator1
rotate_adaptive(BidirectionalIterator1 first,
BidirectionalIterator1 middle,
BidirectionalIterator1 last,
typename iterator_traits<BidirectionalIterator1>::size_type len1,
typename iterator_traits<BidirectionalIterator1>::size_type len2,
BidirectionalIterator2 buffer,
typename iterator_traits<BidirectionalIterator1>::size_type buffer_size)
{
if (len1 > len2 && len2 <= buffer_size)
{
if(len2) //Protect against self-move ranges
{
BidirectionalIterator2 buffer_end = boost::move(middle, last, buffer);
boost::move_backward(first, middle, last);
return boost::move(buffer, buffer_end, first);
}
else
return first;
}
else if (len1 <= buffer_size)
{
if(len1) //Protect against self-move ranges
{
BidirectionalIterator2 buffer_end = boost::move(first, middle, buffer);
BidirectionalIterator1 ret = boost::move(middle, last, first);
boost::move(buffer, buffer_end, ret);
return ret;
}
else
return last;
}
else
return rotate_gcd(first, middle, last);
}
template<typename BidirectionalIterator,
typename Pointer, typename Compare>
void merge_adaptive_ONlogN_recursive
(BidirectionalIterator first,
BidirectionalIterator middle,
BidirectionalIterator last,
typename iterator_traits<BidirectionalIterator>::size_type len1,
typename iterator_traits<BidirectionalIterator>::size_type len2,
Pointer buffer,
typename iterator_traits<BidirectionalIterator>::size_type buffer_size,
Compare comp)
{
typedef typename iterator_traits<BidirectionalIterator>::size_type size_type;
//trivial cases
if (!len2 || !len1) {
return;
}
else if (len1 <= buffer_size || len2 <= buffer_size)
{
range_xbuf<Pointer, size_type, move_op> rxbuf(buffer, buffer + buffer_size);
buffered_merge(first, middle, last, comp, rxbuf);
}
else if (size_type(len1 + len2) == 2u) {
if (comp(*middle, *first))
adl_move_swap(*first, *middle);
return;
}
else if (size_type(len1 + len2) < MergeBufferlessONLogNRotationThreshold) {
merge_bufferless_ON2(first, middle, last, comp);
return;
}
BidirectionalIterator first_cut = first;
BidirectionalIterator second_cut = middle;
size_type len11 = 0;
size_type len22 = 0;
if (len1 > len2) //(len1 < len2)
{
len11 = len1 / 2;
first_cut += len11;
second_cut = boost::movelib::lower_bound(middle, last, *first_cut, comp);
len22 = second_cut - middle;
}
else
{
len22 = len2 / 2;
second_cut += len22;
first_cut = boost::movelib::upper_bound(first, middle, *second_cut, comp);
len11 = first_cut - first;
}
BidirectionalIterator new_middle
= rotate_adaptive(first_cut, middle, second_cut,
size_type(len1 - len11), len22, buffer,
buffer_size);
merge_adaptive_ONlogN_recursive(first, first_cut, new_middle, len11,
len22, buffer, buffer_size, comp);
merge_adaptive_ONlogN_recursive(new_middle, second_cut, last,
len1 - len11, len2 - len22, buffer, buffer_size, comp);
}
template<typename BidirectionalIterator, typename Compare, typename RandRawIt>
void merge_adaptive_ONlogN(BidirectionalIterator first,
BidirectionalIterator middle,
BidirectionalIterator last,
Compare comp,
RandRawIt uninitialized,
typename iterator_traits<BidirectionalIterator>::size_type uninitialized_len)
{
typedef typename iterator_traits<BidirectionalIterator>::value_type value_type;
typedef typename iterator_traits<BidirectionalIterator>::size_type size_type;
if (first == middle || middle == last)
return;
if(uninitialized_len)
{
const size_type len1 = size_type(middle - first);
const size_type len2 = size_type(last - middle);
::boost::movelib::adaptive_xbuf<value_type, RandRawIt> xbuf(uninitialized, uninitialized_len);
xbuf.initialize_until(uninitialized_len, *first);
merge_adaptive_ONlogN_recursive(first, middle, last, len1, len2, xbuf.begin(), uninitialized_len, comp);
}
else
{
merge_bufferless(first, middle, last, comp);
}
}
} //namespace movelib {
} //namespace boost {

80
linx64/include/boost/move/algo/detail/merge_sort.hpp
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@@ -79,9 +79,9 @@ void merge_sort_copy( RandIt first, RandIt last
}
}
template<class RandIt, class Compare>
template<class RandIt, class RandItRaw, class Compare>
void merge_sort_uninitialized_copy( RandIt first, RandIt last
, typename iterator_traits<RandIt>::value_type* uninitialized
, RandItRaw uninitialized
, Compare comp)
{
typedef typename iterator_traits<RandIt>::size_type size_type;
@@ -94,7 +94,7 @@ void merge_sort_uninitialized_copy( RandIt first, RandIt last
else{
size_type const half = count/2;
merge_sort_uninitialized_copy(first + half, last, uninitialized + half, comp);
destruct_n<value_type> d(uninitialized+half);
destruct_n<value_type, RandItRaw> d(uninitialized+half);
d.incr(count-half);
merge_sort_copy(first, first + half, first + half, comp);
uninitialized_merge_with_right_placed
@@ -105,9 +105,9 @@ void merge_sort_uninitialized_copy( RandIt first, RandIt last
}
}
template<class RandIt, class Compare>
template<class RandIt, class RandItRaw, class Compare>
void merge_sort( RandIt first, RandIt last, Compare comp
, typename iterator_traits<RandIt>::value_type* uninitialized)
, RandItRaw uninitialized)
{
typedef typename iterator_traits<RandIt>::size_type size_type;
typedef typename iterator_traits<RandIt>::value_type value_type;
@@ -123,7 +123,7 @@ void merge_sort( RandIt first, RandIt last, Compare comp
RandIt const rest_it = first + rest;
merge_sort_uninitialized_copy(half_it, last, uninitialized, comp);
destruct_n<value_type> d(uninitialized);
destruct_n<value_type, RandItRaw> d(uninitialized);
d.incr(rest);
merge_sort_copy(first, half_it, rest_it, comp);
merge_with_right_placed
@@ -132,6 +132,74 @@ void merge_sort( RandIt first, RandIt last, Compare comp
}
}
///@cond
template<class RandIt, class RandItRaw, class Compare>
void merge_sort_with_constructed_buffer( RandIt first, RandIt last, Compare comp, RandItRaw buffer)
{
typedef typename iterator_traits<RandIt>::size_type size_type;
size_type const count = size_type(last - first);
if(count <= MergeSortInsertionSortThreshold){
insertion_sort(first, last, comp);
}
else{
size_type const half = count/2;
size_type const rest = count - half;
RandIt const half_it = first + half;
RandIt const rest_it = first + rest;
merge_sort_copy(half_it, last, buffer, comp);
merge_sort_copy(first, half_it, rest_it, comp);
merge_with_right_placed
(buffer, buffer + rest
, first, rest_it, last, antistable<Compare>(comp));
}
}
template<typename RandIt, typename Pointer,
typename Distance, typename Compare>
void stable_sort_ONlogN_recursive(RandIt first, RandIt last, Pointer buffer, Distance buffer_size, Compare comp)
{
typedef typename iterator_traits<RandIt>::size_type size_type;
if (size_type(last - first) <= size_type(MergeSortInsertionSortThreshold)) {
insertion_sort(first, last, comp);
}
else {
const size_type len = (last - first) / 2;
const RandIt middle = first + len;
if (len > ((buffer_size+1)/2)){
stable_sort_ONlogN_recursive(first, middle, buffer, buffer_size, comp);
stable_sort_ONlogN_recursive(middle, last, buffer, buffer_size, comp);
}
else{
merge_sort_with_constructed_buffer(first, middle, comp, buffer);
merge_sort_with_constructed_buffer(middle, last, comp, buffer);
}
merge_adaptive_ONlogN_recursive(first, middle, last,
size_type(middle - first),
size_type(last - middle),
buffer, buffer_size,
comp);
}
}
template<typename BidirectionalIterator, typename Compare, typename RandRawIt>
void stable_sort_adaptive_ONlogN2(BidirectionalIterator first,
BidirectionalIterator last,
Compare comp,
RandRawIt uninitialized,
std::size_t uninitialized_len)
{
typedef typename iterator_traits<BidirectionalIterator>::value_type value_type;
::boost::movelib::adaptive_xbuf<value_type, RandRawIt> xbuf(uninitialized, uninitialized_len);
xbuf.initialize_until(uninitialized_len, *first);
stable_sort_ONlogN_recursive(first, last, uninitialized, uninitialized_len, comp);
}
///@endcond
}} //namespace boost { namespace movelib{
#include <boost/move/detail/config_end.hpp>

334
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@@ -0,0 +1,334 @@
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Orson Peters 2017.
// (C) Copyright Ion Gaztanaga 2017-2018.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/move for documentation.
//
//////////////////////////////////////////////////////////////////////////////
//
// This implementation of Pattern-defeating quicksort (pdqsort) was written
// by Orson Peters, and discussed in the Boost mailing list:
// http://boost.2283326.n4.nabble.com/sort-pdqsort-td4691031.html
//
// This implementation is the adaptation by Ion Gaztanaga of code originally in GitHub
// with permission from the author to relicense it under the Boost Software License
// (see the Boost mailing list for details).
//
// The original copyright statement is pasted here for completeness:
//
// pdqsort.h - Pattern-defeating quicksort.
// Copyright (c) 2015 Orson Peters
// This software is provided 'as-is', without any express or implied warranty. In no event will the
// authors be held liable for any damages arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose, including commercial
// applications, and to alter it and redistribute it freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not claim that you wrote the
// original software. If you use this software in a product, an acknowledgment in the product
// documentation would be appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be misrepresented as
// being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_MOVE_ALGO_PDQSORT_HPP
#define BOOST_MOVE_ALGO_PDQSORT_HPP
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include <boost/move/detail/config_begin.hpp>
#include <boost/move/detail/workaround.hpp>
#include <boost/move/utility_core.hpp>
#include <boost/move/algo/detail/insertion_sort.hpp>
#include <boost/move/algo/detail/heap_sort.hpp>
#include <boost/move/detail/iterator_traits.hpp>
#include <boost/move/adl_move_swap.hpp>
#include <cstddef>
namespace boost {
namespace movelib {
namespace pdqsort_detail {
//A simple pair implementation to avoid including <utility>
template<class T1, class T2>
struct pair
{
pair()
{}
pair(const T1 &t1, const T2 &t2)
: first(t1), second(t2)
{}
T1 first;
T2 second;
};
enum {
// Partitions below this size are sorted using insertion sort.
insertion_sort_threshold = 24,
// Partitions above this size use Tukey's ninther to select the pivot.
ninther_threshold = 128,
// When we detect an already sorted partition, attempt an insertion sort that allows this
// amount of element moves before giving up.
partial_insertion_sort_limit = 8,
// Must be multiple of 8 due to loop unrolling, and < 256 to fit in unsigned char.
block_size = 64,
// Cacheline size, assumes power of two.
cacheline_size = 64
};
// Returns floor(log2(n)), assumes n > 0.
template<class Unsigned>
Unsigned log2(Unsigned n) {
Unsigned log = 0;
while (n >>= 1) ++log;
return log;
}
// Attempts to use insertion sort on [begin, end). Will return false if more than
// partial_insertion_sort_limit elements were moved, and abort sorting. Otherwise it will
// successfully sort and return true.
template<class Iter, class Compare>
inline bool partial_insertion_sort(Iter begin, Iter end, Compare comp) {
typedef typename boost::movelib::iterator_traits<Iter>::value_type T;
typedef typename boost::movelib::iterator_traits<Iter>::size_type size_type;
if (begin == end) return true;
size_type limit = 0;
for (Iter cur = begin + 1; cur != end; ++cur) {
if (limit > partial_insertion_sort_limit) return false;
Iter sift = cur;
Iter sift_1 = cur - 1;
// Compare first so we can avoid 2 moves for an element already positioned correctly.
if (comp(*sift, *sift_1)) {
T tmp = boost::move(*sift);
do { *sift-- = boost::move(*sift_1); }
while (sift != begin && comp(tmp, *--sift_1));
*sift = boost::move(tmp);
limit += size_type(cur - sift);
}
}
return true;
}
template<class Iter, class Compare>
inline void sort2(Iter a, Iter b, Compare comp) {
if (comp(*b, *a)) boost::adl_move_iter_swap(a, b);
}
// Sorts the elements *a, *b and *c using comparison function comp.
template<class Iter, class Compare>
inline void sort3(Iter a, Iter b, Iter c, Compare comp) {
sort2(a, b, comp);
sort2(b, c, comp);
sort2(a, b, comp);
}
// Partitions [begin, end) around pivot *begin using comparison function comp. Elements equal
// to the pivot are put in the right-hand partition. Returns the position of the pivot after
// partitioning and whether the passed sequence already was correctly partitioned. Assumes the
// pivot is a median of at least 3 elements and that [begin, end) is at least
// insertion_sort_threshold long.
template<class Iter, class Compare>
pdqsort_detail::pair<Iter, bool> partition_right(Iter begin, Iter end, Compare comp) {
typedef typename boost::movelib::iterator_traits<Iter>::value_type T;
// Move pivot into local for speed.
T pivot(boost::move(*begin));
Iter first = begin;
Iter last = end;
// Find the first element greater than or equal than the pivot (the median of 3 guarantees
// this exists).
while (comp(*++first, pivot));
// Find the first element strictly smaller than the pivot. We have to guard this search if
// there was no element before *first.
if (first - 1 == begin) while (first < last && !comp(*--last, pivot));
else while ( !comp(*--last, pivot));
// If the first pair of elements that should be swapped to partition are the same element,
// the passed in sequence already was correctly partitioned.
bool already_partitioned = first >= last;
// Keep swapping pairs of elements that are on the wrong side of the pivot. Previously
// swapped pairs guard the searches, which is why the first iteration is special-cased
// above.
while (first < last) {
boost::adl_move_iter_swap(first, last);
while (comp(*++first, pivot));
while (!comp(*--last, pivot));
}
// Put the pivot in the right place.
Iter pivot_pos = first - 1;
*begin = boost::move(*pivot_pos);
*pivot_pos = boost::move(pivot);
return pdqsort_detail::pair<Iter, bool>(pivot_pos, already_partitioned);
}
// Similar function to the one above, except elements equal to the pivot are put to the left of
// the pivot and it doesn't check or return if the passed sequence already was partitioned.
// Since this is rarely used (the many equal case), and in that case pdqsort already has O(n)
// performance, no block quicksort is applied here for simplicity.
template<class Iter, class Compare>
inline Iter partition_left(Iter begin, Iter end, Compare comp) {
typedef typename boost::movelib::iterator_traits<Iter>::value_type T;
T pivot(boost::move(*begin));
Iter first = begin;
Iter last = end;
while (comp(pivot, *--last));
if (last + 1 == end) while (first < last && !comp(pivot, *++first));
else while ( !comp(pivot, *++first));
while (first < last) {
boost::adl_move_iter_swap(first, last);
while (comp(pivot, *--last));
while (!comp(pivot, *++first));
}
Iter pivot_pos = last;
*begin = boost::move(*pivot_pos);
*pivot_pos = boost::move(pivot);
return pivot_pos;
}
template<class Iter, class Compare>
void pdqsort_loop( Iter begin, Iter end, Compare comp
, typename boost::movelib::iterator_traits<Iter>::size_type bad_allowed
, bool leftmost = true)
{
typedef typename boost::movelib::iterator_traits<Iter>::size_type size_type;
// Use a while loop for tail recursion elimination.
while (true) {
size_type size = size_type(end - begin);
// Insertion sort is faster for small arrays.
if (size < insertion_sort_threshold) {
insertion_sort(begin, end, comp);
return;
}
// Choose pivot as median of 3 or pseudomedian of 9.
size_type s2 = size / 2;
if (size > ninther_threshold) {
sort3(begin, begin + s2, end - 1, comp);
sort3(begin + 1, begin + (s2 - 1), end - 2, comp);
sort3(begin + 2, begin + (s2 + 1), end - 3, comp);
sort3(begin + (s2 - 1), begin + s2, begin + (s2 + 1), comp);
boost::adl_move_iter_swap(begin, begin + s2);
} else sort3(begin + s2, begin, end - 1, comp);
// If *(begin - 1) is the end of the right partition of a previous partition operation
// there is no element in [begin, end) that is smaller than *(begin - 1). Then if our
// pivot compares equal to *(begin - 1) we change strategy, putting equal elements in
// the left partition, greater elements in the right partition. We do not have to
// recurse on the left partition, since it's sorted (all equal).
if (!leftmost && !comp(*(begin - 1), *begin)) {
begin = partition_left(begin, end, comp) + 1;
continue;
}
// Partition and get results.
pdqsort_detail::pair<Iter, bool> part_result = partition_right(begin, end, comp);
Iter pivot_pos = part_result.first;
bool already_partitioned = part_result.second;
// Check for a highly unbalanced partition.
size_type l_size = size_type(pivot_pos - begin);
size_type r_size = size_type(end - (pivot_pos + 1));
bool highly_unbalanced = l_size < size / 8 || r_size < size / 8;
// If we got a highly unbalanced partition we shuffle elements to break many patterns.
if (highly_unbalanced) {
// If we had too many bad partitions, switch to heapsort to guarantee O(n log n).
if (--bad_allowed == 0) {
boost::movelib::heap_sort(begin, end, comp);
return;
}
if (l_size >= insertion_sort_threshold) {
boost::adl_move_iter_swap(begin, begin + l_size / 4);
boost::adl_move_iter_swap(pivot_pos - 1, pivot_pos - l_size / 4);
if (l_size > ninther_threshold) {
boost::adl_move_iter_swap(begin + 1, begin + (l_size / 4 + 1));
boost::adl_move_iter_swap(begin + 2, begin + (l_size / 4 + 2));
boost::adl_move_iter_swap(pivot_pos - 2, pivot_pos - (l_size / 4 + 1));
boost::adl_move_iter_swap(pivot_pos - 3, pivot_pos - (l_size / 4 + 2));
}
}
if (r_size >= insertion_sort_threshold) {
boost::adl_move_iter_swap(pivot_pos + 1, pivot_pos + (1 + r_size / 4));
boost::adl_move_iter_swap(end - 1, end - r_size / 4);
if (r_size > ninther_threshold) {
boost::adl_move_iter_swap(pivot_pos + 2, pivot_pos + (2 + r_size / 4));
boost::adl_move_iter_swap(pivot_pos + 3, pivot_pos + (3 + r_size / 4));
boost::adl_move_iter_swap(end - 2, end - (1 + r_size / 4));
boost::adl_move_iter_swap(end - 3, end - (2 + r_size / 4));
}
}
} else {
// If we were decently balanced and we tried to sort an already partitioned
// sequence try to use insertion sort.
if (already_partitioned && partial_insertion_sort(begin, pivot_pos, comp)
&& partial_insertion_sort(pivot_pos + 1, end, comp)) return;
}
// Sort the left partition first using recursion and do tail recursion elimination for
// the right-hand partition.
pdqsort_loop<Iter, Compare>(begin, pivot_pos, comp, bad_allowed, leftmost);
begin = pivot_pos + 1;
leftmost = false;
}
}
}
template<class Iter, class Compare>
void pdqsort(Iter begin, Iter end, Compare comp)
{
if (begin == end) return;
typedef typename boost::movelib::iterator_traits<Iter>::size_type size_type;
pdqsort_detail::pdqsort_loop<Iter, Compare>(begin, end, comp, pdqsort_detail::log2(size_type(end - begin)));
}
} //namespace movelib {
} //namespace boost {
#include <boost/move/detail/config_end.hpp>
#endif //BOOST_MOVE_ALGO_PDQSORT_HPP

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@@ -0,0 +1,207 @@
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2017-2017.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/move for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_MOVE_SET_DIFFERENCE_HPP
#define BOOST_MOVE_SET_DIFFERENCE_HPP
#include <boost/move/algo/move.hpp>
#include <boost/move/iterator.hpp>
#include <boost/move/utility_core.hpp>
namespace boost {
namespace move_detail{
template<class InputIt, class OutputIt>
OutputIt copy(InputIt first, InputIt last, OutputIt result)
{
while (first != last) {
*result++ = *first;
++result;
++first;
}
return result;
}
} //namespace move_detail{
namespace movelib {
//Moves the elements from the sorted range [first1, last1) which are not found in the sorted
//range [first2, last2) to the range beginning at result.
//The resulting range is also sorted. Equivalent elements are treated individually,
//that is, if some element is found m times in [first1, last1) and n times in [first2, last2),
//it will be moved to result exactly max(m-n, 0) times.
//The resulting range cannot overlap with either of the input ranges.
template<class InputIt1, class InputIt2,
class OutputIt, class Compare>
OutputIt set_difference
(InputIt1 first1, InputIt1 last1, InputIt2 first2, InputIt2 last2, OutputIt result, Compare comp)
{
while (first1 != last1) {
if (first2 == last2)
return boost::move_detail::copy(first1, last1, result);
if (comp(*first1, *first2)) {
*result = *first1;
++result;
++first1;
}
else {
if (!comp(*first2, *first1)) {
++first1;
}
++first2;
}
}
return result;
}
//Moves the elements from the sorted range [first1, last1) which are not found in the sorted
//range [first2, last2) to the range beginning at first1 (in place operation in range1).
//The resulting range is also sorted. Equivalent elements are treated individually,
//that is, if some element is found m times in [first1, last1) and n times in [first2, last2),
//it will be moved to result exactly max(m-n, 0) times.
template<class InputOutputIt1, class InputIt2, class Compare>
InputOutputIt1 inplace_set_difference
(InputOutputIt1 first1, InputOutputIt1 last1, InputIt2 first2, InputIt2 last2, Compare comp )
{
while (first1 != last1) {
//Skip copying from range 1 if no element has to be skipped
if (first2 == last2){
return last1;
}
else if (comp(*first1, *first2)){
++first1;
}
else{
if (!comp(*first2, *first1)) {
InputOutputIt1 result = first1;
//An element from range 1 must be skipped, no longer an inplace operation
return boost::movelib::set_difference
( boost::make_move_iterator(++first1)
, boost::make_move_iterator(last1)
, ++first2, last2, result, comp);
}
++first2;
}
}
return first1;
}
//Moves the elements from the sorted range [first1, last1) which are not found in the sorted
//range [first2, last2) to the range beginning at first1.
//The resulting range is also sorted. Equivalent elements from range 1 are moved past to end
//of the result,
//that is, if some element is found m times in [first1, last1) and n times in [first2, last2),
//it will be moved to result exactly max(m-n, 0) times.
//The resulting range cannot overlap with either of the input ranges.
template<class ForwardIt1, class InputIt2,
class OutputIt, class Compare>
OutputIt set_unique_difference
(ForwardIt1 first1, ForwardIt1 last1, InputIt2 first2, InputIt2 last2, OutputIt result, Compare comp)
{
while (first1 != last1) {
if (first2 == last2){
//unique_copy-like sequence with forward iterators but don't write i
//to result before comparing as moving *i could alter the value in i.
ForwardIt1 i = first1;
while (++first1 != last1) {
if (comp(*i, *first1)) {
*result = *i;
++result;
i = first1;
}
}
*result = *i;
++result;
break;
}
if (comp(*first1, *first2)) {
//Skip equivalent elements in range1 but don't write i
//to result before comparing as moving *i could alter the value in i.
ForwardIt1 i = first1;
while (++first1 != last1) {
if (comp(*i, *first1)) {
break;
}
}
*result = *i;
++result;
}
else {
if (comp(*first2, *first1)) {
++first2;
}
else{
++first1;
}
}
}
return result;
}
//Moves the elements from the sorted range [first1, last1) which are not found in the sorted
//range [first2, last2) to the range beginning at first1 (in place operation in range1).
//The resulting range is also sorted. Equivalent elements are treated individually,
//that is, if some element is found m times in [first1, last1) and n times in [first2, last2),
//it will be moved to result exactly max(m-n, 0) times.
template<class ForwardOutputIt1, class ForwardIt2, class Compare>
ForwardOutputIt1 inplace_set_unique_difference
(ForwardOutputIt1 first1, ForwardOutputIt1 last1, ForwardIt2 first2, ForwardIt2 last2, Compare comp )
{
while (first1 != last1) {
//Skip copying from range 1 if no element has to be skipped
if (first2 == last2){
//unique-like algorithm for the remaining range 1
ForwardOutputIt1 result = first1;
while (++first1 != last1) {
if (comp(*result, *first1) && ++result != first1) {
*result = boost::move(*first1);
}
}
return ++result;
}
else if (comp(*first2, *first1)) {
++first2;
}
else if (comp(*first1, *first2)){
//skip any adjacent equivalent elementin range 1
ForwardOutputIt1 result = first1;
if (++first1 != last1 && !comp(*result, *first1)) {
//Some elements from range 1 must be skipped, no longer an inplace operation
while (++first1 != last1 && !comp(*result, *first1)){}
return boost::movelib::set_unique_difference
( boost::make_move_iterator(first1)
, boost::make_move_iterator(last1)
, first2, last2, ++result, comp);
}
}
else{
ForwardOutputIt1 result = first1;
//Some elements from range 1 must be skipped, no longer an inplace operation
while (++first1 != last1 && !comp(*result, *first1)){}
//An element from range 1 must be skipped, no longer an inplace operation
return boost::movelib::set_unique_difference
( boost::make_move_iterator(first1)
, boost::make_move_iterator(last1)
, first2, last2, result, comp);
}
}
return first1;
}
} //namespace movelib {
} //namespace boost {
#endif //#define BOOST_MOVE_SET_DIFFERENCE_HPP