693 lines
90 KiB
XML
693 lines
90 KiB
XML
<?xml version="1.0" standalone="yes"?>
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<library-reference id="boost_sort_c___reference"><title>Boost.Sort C++ Reference</title><header name="boost/sort/spreadsort/float_sort.hpp">
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<namespace name="boost">
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<namespace name="sort">
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<namespace name="spreadsort">
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<function name="float_mem_cast"><type>Cast_type</type><template>
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<template-type-parameter name="Data_type"><purpose><para>Floating-point IEEE 754/IEC559 type. </para></purpose></template-type-parameter>
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<template-type-parameter name="Cast_type"><purpose><para>Integer type (same size) to which to cast.</para></purpose></template-type-parameter>
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</template><parameter name="data"><paramtype>const Data_type &</paramtype></parameter><purpose>Casts a float to the specified integer type. </purpose><description><para>
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<formalpara><title>Example:</title><para><programlisting language="c++">struct rightshift {
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int operator()(const DATA_TYPE &x, const unsigned offset) const {
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return float_mem_cast<KEY_TYPE, CAST_TYPE>(x.key) >> offset;
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}
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};
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</programlisting> </para></formalpara>
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</para></description></function>
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<function name="float_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose><computeroutput>float_sort</computeroutput> with casting to the appropriate size. </purpose><description><para>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_float_sort.htm">windows_float_sort</ulink> <sbr/>
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<ulink url="../../doc/graph/osx_float_sort.htm">osx_float_sort</ulink></para><para><formalpara><title>A simple example of sorting some floating-point is:</title><para><programlisting language="c++">vector<float> vec;
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vec.push_back(1.0);
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vec.push_back(2.3);
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vec.push_back(1.3);
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spreadsort(vec.begin(), vec.end());
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</programlisting> </para></formalpara>
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<formalpara><title>The sorted vector contains ascending values "1.0 1.3 2.3".</title><para/></formalpara>
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</para></description></function>
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<function name="float_sort"><type>void</type><template>
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<template-type-parameter name="Range"/>
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</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><purpose>Floating-point sort algorithm using range. </purpose><description><para>
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</para></description></function>
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<function name="float_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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<template-type-parameter name="Right_shift"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="rshift"><paramtype>Right_shift</paramtype><description><para>Functor that returns the result of shifting the value_type right a specified number of bits. </para></description></parameter><purpose>Floating-point sort algorithm using random access iterators with just right-shift functor. </purpose><description><para>
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</para></description></function>
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<function name="float_sort"><type>void</type><template>
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<template-type-parameter name="Range"/>
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<template-type-parameter name="Right_shift"/>
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</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="rshift"><paramtype>Right_shift</paramtype><description><para>Functor that returns the result of shifting the value_type right a specified number of bits. </para></description></parameter><purpose>Floating-point sort algorithm using range with just right-shift functor. </purpose><description><para>
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</para></description></function>
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<function name="float_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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<template-type-parameter name="Right_shift"/>
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<template-type-parameter name="Compare"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="rshift"><paramtype>Right_shift</paramtype><description><para>Functor that returns the result of shifting the value_type right a specified number of bits. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order. </para></description></parameter><purpose>Float sort algorithm using random access iterators with both right-shift and user-defined comparison operator. </purpose><description><para>
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</para></description></function>
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<function name="float_sort"><type>void</type><template>
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<template-type-parameter name="Range"/>
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<template-type-parameter name="Right_shift"/>
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<template-type-parameter name="Compare"/>
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</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="rshift"><paramtype>Right_shift</paramtype><description><para>Functor that returns the result of shifting the value_type right a specified number of bits. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order. </para></description></parameter><purpose>Float sort algorithm using range with both right-shift and user-defined comparison operator. </purpose><description><para>
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</para></description></function>
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</namespace>
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</namespace>
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</namespace>
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</header>
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<header name="boost/sort/spreadsort/integer_sort.hpp">
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<namespace name="boost">
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<namespace name="sort">
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<namespace name="spreadsort">
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<function name="integer_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose>Integer sort algorithm using random access iterators. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>integer_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>integer_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <computeroutput>s</computeroutput> is <computeroutput>max_splits</computeroutput>, which defaults to 11, so its worst-case with default settings for 32-bit integers is <emphasis> O(N * ((32/11) </emphasis> slow radix-based iterations fast comparison-based iterations).<sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink> <sbr/>
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<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para><para>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
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<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
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<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
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<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
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<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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<function name="integer_sort"><type>void</type><template>
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<template-type-parameter name="Range"/>
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</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting.</para></description></parameter><purpose>Integer sort algorithm using range. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>integer_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>integer_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <computeroutput>s</computeroutput> is <computeroutput>max_splits</computeroutput>, which defaults to 11, so its worst-case with default settings for 32-bit integers is <emphasis> O(N * ((32/11) </emphasis> slow radix-based iterations fast comparison-based iterations).<sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink> <sbr/>
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<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para><para>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
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<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
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<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
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<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
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<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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<function name="integer_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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<template-type-parameter name="Right_shift"/>
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<template-type-parameter name="Compare"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="shift"><paramtype>Right_shift</paramtype><description><para>Functor that returns the result of shifting the value_type right a specified number of bits. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>Integer sort algorithm using random access iterators with both right-shift and user-defined comparison operator. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>integer_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>integer_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <computeroutput>s</computeroutput> is <computeroutput>max_splits</computeroutput>, which defaults to 11, so its worst-case with default settings for 32-bit integers is <emphasis> O(N * ((32/11) </emphasis> slow radix-based iterations fast comparison-based iterations).<sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink> <sbr/>
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<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para><para>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
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<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
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<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
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<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
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<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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<function name="integer_sort"><type>void</type><template>
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<template-type-parameter name="Range"/>
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<template-type-parameter name="Right_shift"/>
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<template-type-parameter name="Compare"/>
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</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="shift"><paramtype>Right_shift</paramtype><description><para>Functor that returns the result of shifting the value_type right a specified number of bits. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>Integer sort algorithm using range with both right-shift and user-defined comparison operator. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>integer_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>integer_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <computeroutput>s</computeroutput> is <computeroutput>max_splits</computeroutput>, which defaults to 11, so its worst-case with default settings for 32-bit integers is <emphasis> O(N * ((32/11) </emphasis> slow radix-based iterations fast comparison-based iterations).<sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink> <sbr/>
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<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para><para>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
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<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
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<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
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<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
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<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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<function name="integer_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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<template-type-parameter name="Right_shift"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="shift"><paramtype>Right_shift</paramtype><description><para>A functor that returns the result of shifting the value_type right a specified number of bits.</para></description></parameter><purpose>Integer sort algorithm using random access iterators with just right-shift functor. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>integer_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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<formalpara><title>Performance:</title><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>integer_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <computeroutput>s</computeroutput> is <computeroutput>max_splits</computeroutput>, which defaults to 11, so its worst-case with default settings for 32-bit integers is <emphasis> O(N * ((32/11) </emphasis> slow radix-based iterations fast comparison-based iterations).<sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink><sbr/>
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<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para></formalpara>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
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<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
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<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
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<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
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<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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<function name="integer_sort"><type>void</type><template>
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<template-type-parameter name="Range"/>
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<template-type-parameter name="Right_shift"/>
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</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="shift"><paramtype>Right_shift</paramtype><description><para>A functor that returns the result of shifting the value_type right a specified number of bits.</para></description></parameter><purpose>Integer sort algorithm using range with just right-shift functor. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>integer_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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<formalpara><title>Performance:</title><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>integer_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <computeroutput>s</computeroutput> is <computeroutput>max_splits</computeroutput>, which defaults to 11, so its worst-case with default settings for 32-bit integers is <emphasis> O(N * ((32/11) </emphasis> slow radix-based iterations fast comparison-based iterations).<sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink><sbr/>
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<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para></formalpara>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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</namespace>
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</namespace>
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</namespace>
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</header>
|
|
<header name="boost/sort/spreadsort/spreadsort.hpp">
|
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<namespace name="boost">
|
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<namespace name="sort">
|
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<namespace name="spreadsort">
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<function name="spreadsort"><type>boost::enable_if_c< std::numeric_limits< typename std::iterator_traits< RandomAccessIter >::value_type >::is_integer, void >::type</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose>Generic <computeroutput>spreadsort</computeroutput> variant detecting integer-type elements so call to <computeroutput>integer_sort</computeroutput>. </purpose><description><para>If the data type provided is an integer, <computeroutput>integer_sort</computeroutput> is used. <note><para>Sorting other data types requires picking between <computeroutput>integer_sort</computeroutput>, <computeroutput>float_sort</computeroutput> and <computeroutput>string_sort</computeroutput> directly, as <computeroutput>spreadsort</computeroutput> won't accept types that don't have the appropriate <computeroutput>type_traits</computeroutput>. </para></note>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order. </para></postconditions></function>
|
|
<function name="spreadsort"><type>boost::enable_if_c< !std::numeric_limits< typename std::iterator_traits< RandomAccessIter >::value_type >::is_integer &&std::numeric_limits< typename std::iterator_traits< RandomAccessIter >::value_type >::is_iec559, void >::type</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose>Generic <computeroutput>spreadsort</computeroutput> variant detecting float element type so call to <computeroutput>float_sort</computeroutput>. </purpose><description><para>If the data type provided is a float or castable-float, <computeroutput>float_sort</computeroutput> is used. <note><para>Sorting other data types requires picking between <computeroutput>integer_sort</computeroutput>, <computeroutput>float_sort</computeroutput> and <computeroutput>string_sort</computeroutput> directly, as <computeroutput>spreadsort</computeroutput> won't accept types that don't have the appropriate <computeroutput>type_traits</computeroutput>.</para></note>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order. </para></postconditions></function>
|
|
<function name="spreadsort"><type>boost::enable_if_c< is_same< typename std::iterator_traits< RandomAccessIter >::value_type, typename std::string >::value, void >::type</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose>Generic <computeroutput>spreadsort</computeroutput> variant detecting string element type so call to <computeroutput>string_sort</computeroutput> for <computeroutput>std::strings</computeroutput>. </purpose><description><para>If the data type provided is a string, <computeroutput>string_sort</computeroutput> is used. <note><para>Sorting other data types requires picking between <computeroutput>integer_sort</computeroutput>, <computeroutput>float_sort</computeroutput> and <computeroutput>string_sort</computeroutput> directly, as <computeroutput>spreadsort</computeroutput> won't accept types that don't have the appropriate <computeroutput>type_traits</computeroutput>.</para></note>
|
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|
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order. </para></postconditions></function>
|
|
<function name="spreadsort"><type>boost::enable_if_c< is_same< typename std::iterator_traits< RandomAccessIter >::value_type, typename std::wstring >::value &&sizeof(wchar_t)==2, void >::type</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose>Generic <computeroutput>spreadsort</computeroutput> variant detecting string element type so call to <computeroutput>string_sort</computeroutput> for <computeroutput>std::wstrings</computeroutput>. </purpose><description><para>If the data type provided is a wstring, <computeroutput>string_sort</computeroutput> is used. <note><para>Sorting other data types requires picking between <computeroutput>integer_sort</computeroutput>, <computeroutput>float_sort</computeroutput> and <computeroutput>string_sort</computeroutput> directly, as <computeroutput>spreadsort</computeroutput> won't accept types that don't have the appropriate <computeroutput>type_traits</computeroutput>. Also, 2-byte wide-characters are the limit above which string_sort is inefficient, so on platforms with wider characters, this will not accept wstrings.</para></note>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order. </para></postconditions></function>
|
|
<function name="spreadsort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting.</para></description></parameter><purpose>Generic <computeroutput>spreadsort</computeroutput> variant detects value_type and calls required sort function. </purpose><description><para><note><para>Sorting other data types requires picking between <computeroutput>integer_sort</computeroutput>, <computeroutput>float_sort</computeroutput> and <computeroutput>string_sort</computeroutput> directly, as <computeroutput>spreadsort</computeroutput> won't accept types that don't have the appropriate <computeroutput>type_traits</computeroutput>.</para></note>
|
|
|
|
|
|
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order. </para></postconditions></function>
|
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|
|
</namespace>
|
|
</namespace>
|
|
</namespace>
|
|
</header>
|
|
<header name="boost/sort/spreadsort/string_sort.hpp">
|
|
<namespace name="boost">
|
|
<namespace name="sort">
|
|
<namespace name="spreadsort">
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="RandomAccessIter"><purpose><para><ulink url="http://www.cplusplus.com/reference/iterator/RandomAccessIterator/">Random access iterator</ulink> </para></purpose></template-type-parameter>
|
|
<template-type-parameter name="Unsigned_char_type"><purpose><para>Unsigned character type used for string. </para></purpose></template-type-parameter>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="unused"><paramtype>Unsigned_char_type</paramtype><description><para>value with the same type as the result of the [] operator, defining the Unsigned_char_type. The actual value is unused.</para></description></parameter><purpose>String sort algorithm using random access iterators, allowing character-type overloads.<sbr/>
|
|
(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
<template-type-parameter name="Unsigned_char_type"><purpose><para>Unsigned character type used for string. </para></purpose></template-type-parameter>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="unused"><paramtype>Unsigned_char_type</paramtype><description><para>value with the same type as the result of the [] operator, defining the Unsigned_char_type. The actual value is unused.</para></description></parameter><purpose>String sort algorithm using range, allowing character-type overloads.<sbr/>
|
|
(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data.</para></description></parameter><purpose>String sort algorithm using random access iterators, wraps using default of unsigned char. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink> <sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para><para>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting.</para></description></parameter><purpose>String sort algorithm using range, wraps using default of unsigned char. (All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>). </purpose><description><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink> <sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para><para>
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="reverse_string_sort"><type>void</type><template>
|
|
<template-type-parameter name="RandomAccessIter"><purpose><para><ulink url="http://www.cplusplus.com/reference/iterator/RandomAccessIterator/">Random access iterator</ulink> </para></purpose></template-type-parameter>
|
|
<template-type-parameter name="Compare"/>
|
|
<template-type-parameter name="Unsigned_char_type"><purpose><para>Unsigned character type used for string.</para></purpose></template-type-parameter>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order. </para></description></parameter><parameter name="unused"><paramtype>Unsigned_char_type</paramtype><description><para>value with the same type as the result of the [] operator, defining the Unsigned_char_type. The actual value is unused.</para></description></parameter><purpose>String sort algorithm using random access iterators, allowing character-type overloads. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < detail::min_sort_size).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="reverse_string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
<template-type-parameter name="Compare"/>
|
|
<template-type-parameter name="Unsigned_char_type"><purpose><para>Unsigned character type used for string.</para></purpose></template-type-parameter>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order. </para></description></parameter><parameter name="unused"><paramtype>Unsigned_char_type</paramtype><description><para>value with the same type as the result of the [] operator, defining the Unsigned_char_type. The actual value is unused.</para></description></parameter><purpose>String sort algorithm using range, allowing character-type overloads. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < detail::min_sort_size).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_integer_sort.htm">windows_integer_sort</ulink> <sbr/>
|
|
<ulink url="../../doc/graph/osx_integer_sort.htm">osx_integer_sort</ulink></para><para>
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="reverse_string_sort"><type>void</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
<template-type-parameter name="Compare"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>String sort algorithm using random access iterators, wraps using default of <computeroutput>unsigned</computeroutput> char. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms.<sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="reverse_string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
<template-type-parameter name="Compare"/>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>String sort algorithm using range, wraps using default of <computeroutput>unsigned</computeroutput> char. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
<template-type-parameter name="Get_char"/>
|
|
<template-type-parameter name="Get_length"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="get_character"><paramtype>Get_char</paramtype><description><para>Bracket functor equivalent to <computeroutput>operator</computeroutput>[], taking a number corresponding to the character offset. </para></description></parameter><parameter name="length"><paramtype>Get_length</paramtype><description><para>Functor to get the length of the string in characters.</para></description></parameter><purpose>String sort algorithm using random access iterators, wraps using default of <computeroutput>unsigned</computeroutput> char. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> supports the <computeroutput>operator>></computeroutput>, which returns an integer-type right-shifted a specified number of bits. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
<template-type-parameter name="Get_char"/>
|
|
<template-type-parameter name="Get_length"/>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="get_character"><paramtype>Get_char</paramtype><description><para>Bracket functor equivalent to <computeroutput>operator</computeroutput>[], taking a number corresponding to the character offset. </para></description></parameter><parameter name="length"><paramtype>Get_length</paramtype><description><para>Functor to get the length of the string in characters.</para></description></parameter><purpose>String sort algorithm using range, wraps using default of <computeroutput>unsigned</computeroutput> char. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="RandomAccessIter"/>
|
|
<template-type-parameter name="Get_char"/>
|
|
<template-type-parameter name="Get_length"/>
|
|
<template-type-parameter name="Compare"/>
|
|
</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="get_character"><paramtype>Get_char</paramtype><description><para>Bracket functor equivalent to <computeroutput>operator</computeroutput>[], taking a number corresponding to the character offset. </para></description></parameter><parameter name="length"><paramtype>Get_length</paramtype><description><para>Functor to get the length of the string in characters. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>String sort algorithm using random access iterators, wraps using default of <computeroutput>unsigned</computeroutput> char. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
<template-type-parameter name="Get_char"/>
|
|
<template-type-parameter name="Get_length"/>
|
|
<template-type-parameter name="Compare"/>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="get_character"><paramtype>Get_char</paramtype><description><para>Bracket functor equivalent to <computeroutput>operator</computeroutput>[], taking a number corresponding to the character offset. </para></description></parameter><parameter name="length"><paramtype>Get_length</paramtype><description><para>Functor to get the length of the string in characters. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>String sort algorithm using range, wraps using default of <computeroutput>unsigned</computeroutput> char. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
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<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
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<sbr/>
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Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
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<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
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<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
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<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
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<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
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<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
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<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
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<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
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<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
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<function name="reverse_string_sort"><type>void</type><template>
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<template-type-parameter name="RandomAccessIter"/>
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<template-type-parameter name="Get_char"/>
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<template-type-parameter name="Get_length"/>
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<template-type-parameter name="Compare"/>
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</template><parameter name="first"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointer to first element. </para></description></parameter><parameter name="last"><paramtype>RandomAccessIter</paramtype><description><para>Iterator pointing to one beyond the end of data. </para></description></parameter><parameter name="get_character"><paramtype>Get_char</paramtype><description><para>Bracket functor equivalent to <computeroutput>operator</computeroutput>[], taking a number corresponding to the character offset. </para></description></parameter><parameter name="length"><paramtype>Get_length</paramtype><description><para>Functor to get the length of the string in characters. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>Reverse String sort algorithm using random access iterators. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
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<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
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</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is mutable. </para></requires><requires><para><computeroutput>RandomAccessIter</computeroutput> <computeroutput>value_type</computeroutput> is <ulink url="http://en.cppreference.com/w/cpp/concept/LessThanComparable">LessThanComparable</ulink> </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
<function name="reverse_string_sort"><type>void</type><template>
|
|
<template-type-parameter name="Range"/>
|
|
<template-type-parameter name="Get_char"/>
|
|
<template-type-parameter name="Get_length"/>
|
|
<template-type-parameter name="Compare"/>
|
|
</template><parameter name="range"><paramtype>Range &</paramtype><description><para>Range [first, last) for sorting. </para></description></parameter><parameter name="get_character"><paramtype>Get_char</paramtype><description><para>Bracket functor equivalent to <computeroutput>operator</computeroutput>[], taking a number corresponding to the character offset. </para></description></parameter><parameter name="length"><paramtype>Get_length</paramtype><description><para>Functor to get the length of the string in characters. </para></description></parameter><parameter name="comp"><paramtype>Compare</paramtype><description><para>A binary functor that returns whether the first element passed to it should go before the second in order.</para></description></parameter><purpose>Reverse String sort algorithm using range. </purpose><description><para>(All variants fall back to <computeroutput>std::sort</computeroutput> if the data size is too small, < <computeroutput>detail::min_sort_size</computeroutput>).</para><para><computeroutput>string_sort</computeroutput> is a fast templated in-place hybrid radix/comparison algorithm, which in testing tends to be roughly 50% to 2X faster than <computeroutput>std::sort</computeroutput> for large tests (>=100kB).<sbr/>
|
|
<formalpara><title/><para>Worst-case performance is <emphasis> O(N * (lg(range)/s + s)) </emphasis>, so <computeroutput>string_sort</computeroutput> is asymptotically faster than pure comparison-based algorithms. <sbr/>
|
|
<sbr/>
|
|
Some performance plots of runtime vs. n and log(range) are provided:<sbr/>
|
|
<ulink url="../../doc/graph/windows_string_sort.htm">windows_string_sort</ulink><sbr/>
|
|
<ulink url="../../doc/graph/osx_string_sort.htm">osx_string_sort</ulink></para></formalpara>
|
|
|
|
|
|
|
|
|
|
|
|
<warning><para>Throwing an exception may cause data loss. This will also throw if a small vector resize throws, in which case there will be no data loss. </para></warning>
|
|
<warning><para>Invalid arguments cause undefined behaviour. </para></warning>
|
|
<note><para><computeroutput>spreadsort</computeroutput> function provides a wrapper that calls the fastest sorting algorithm available for a data type, enabling faster generic-programming.</para></note>
|
|
<para>The lesser of <emphasis> O(N*log(N)) </emphasis> comparisons and <emphasis> O(N*log(K/S + S)) </emphasis>operations worst-case, where: </para>
|
|
<para>* N is <computeroutput>last</computeroutput> - <computeroutput>first</computeroutput>, </para>
|
|
<para>* K is the log of the range in bits (32 for 32-bit integers using their full range), </para>
|
|
<para>* S is a constant called max_splits, defaulting to 11 (except for strings where it is the log of the character size). </para>
|
|
</para></description><requires><para>[<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) is a valid range. </para></requires><postconditions><para>The elements in the range [<computeroutput>first</computeroutput>, <computeroutput>last</computeroutput>) are sorted in ascending order.</para></postconditions><returns><para><computeroutput>void</computeroutput>.</para></returns><throws><simpara><classname>std::exception</classname> Propagates exceptions if any of the element comparisons, the element swaps (or moves), the right shift, subtraction of right-shifted elements, functors, or any operations on iterators throw.</simpara></throws></function>
|
|
</namespace>
|
|
</namespace>
|
|
</namespace>
|
|
</header>
|
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</library-reference> |