libstdc++
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Classes | |
struct | Loser |
Internal representation of a LoserTree element. More... |
Public Member Functions | |
int | get_min_source () |
void | insert_start (const T &key, int source, bool sup) |
LoserTreeBase (unsigned int _k, Comparator _comp) | |
~LoserTreeBase () |
Protected Attributes | |
unsigned int | _M_log_k |
Comparator | comp |
bool | first_insert |
unsigned int | ik |
unsigned int | k |
Loser * | losers |
unsigned int | offset |
Guarded loser/tournament tree.
The smallest element is at the top.
Guarding is done explicitly through one flag sup per element, inf is not needed due to a better initialization routine. This is a well-performing variant.
T | the element type |
Comparator | the comparator to use, defaults to std::less<T> |
Definition at line 57 of file losertree.h.
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The constructor.
_k | The number of sequences to merge. |
_comp | The comparator to use. |
Definition at line 96 of file losertree.h.
References __gnu_parallel::__log2(), __gnu_parallel::LoserTreeBase< T, Comparator >::_M_log_k, __gnu_parallel::LoserTreeBase< T, Comparator >::first_insert, and __gnu_parallel::LoserTreeBase< T, Comparator >::losers.
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The destructor.
Definition at line 119 of file losertree.h.
References __gnu_parallel::LoserTreeBase< T, Comparator >::losers.
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Definition at line 152 of file losertree.h.
References __gnu_parallel::LoserTreeBase< T, Comparator >::losers, and __gnu_parallel::LoserTreeBase< T, Comparator >::Loser::source.
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Initializes the sequence "source" with the element "key".
key | the element to insert |
source | index of the source sequence |
sup | flag that determines whether the value to insert is an explicit supremum. |
Definition at line 131 of file losertree.h.
References __gnu_parallel::LoserTreeBase< T, Comparator >::first_insert, __gnu_parallel::LoserTreeBase< T, Comparator >::Loser::key, __gnu_parallel::LoserTreeBase< T, Comparator >::losers, __gnu_parallel::LoserTreeBase< T, Comparator >::Loser::source, and __gnu_parallel::LoserTreeBase< T, Comparator >::Loser::sup.
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log_2{k}
Definition at line 74 of file losertree.h.
Referenced by __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase().
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Comparator to use.
Definition at line 80 of file losertree.h.
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State flag that determines whether the LoserTree is empty.
Only used for building the LoserTree.
Definition at line 87 of file losertree.h.
Referenced by __gnu_parallel::LoserTreeBase< T, Comparator >::insert_start(), and __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase().
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LoserTree elements.
Definition at line 77 of file losertree.h.
Referenced by __gnu_parallel::LoserTreeBase< T, Comparator >::get_min_source(), __gnu_parallel::LoserTreeBase< T, Comparator >::insert_start(), __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase(), and __gnu_parallel::LoserTreeBase< T, Comparator >::~LoserTreeBase().