__gnu_parallel::LoserTree

Langue: en

Version: 172135 (fedora - 06/07/09)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

__gnu_parallel::LoserTree - Stable LoserTree variant.

SYNOPSIS


Inherits LoserTreeBase< T, Comparator >.

Public Member Functions


void delete_min_insert (T key, bool sup)

int get_min_source ()

void init ()

unsigned int init_winner (unsigned int root)

void insert_start (const T &key, int source, bool sup)

LoserTree (unsigned int _k, Comparator _comp)

Protected Attributes


unsigned int _M_log_k

Comparator comp

bool first_insert

unsigned int ik

unsigned int k

Loser * losers

unsigned int offset

Detailed Description

template<bool stable, typename T, typename Comparator> class __gnu_parallel::LoserTree< stable, T, Comparator >

Stable LoserTree variant.

Provides the stable implementations of insert_start, init_winner, init and delete_min_insert.

Unstable variant is done using partial specialisation below.

Definition at line 165 of file losertree.h.

Member Function Documentation

template<bool stable, typename T , typename Comparator > void __gnu_parallel::LoserTree< stable, T, Comparator >::delete_min_insert (T key, bool sup) [inline]

Delete the smallest element and insert a new element from the previously smallest element's sequence.

This implementation is stable.

Definition at line 215 of file losertree.h.

int __gnu_parallel::LoserTreeBase< T , Comparator >::get_min_source () [inline, inherited]

Returns:

the index of the sequence with the smallest element.

Definition at line 152 of file losertree.h.

References __gnu_parallel::LoserTreeBase< T, Comparator >::losers, and __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase::Loser::source.

void __gnu_parallel::LoserTreeBase< T , Comparator >::insert_start (const T & key, int source, bool sup) [inline, inherited]

Initializes the sequence 'source' with the element 'key'.

Parameters:

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 >::LoserTreeBase::Loser::key, __gnu_parallel::LoserTreeBase< T, Comparator >::losers, __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase::Loser::source, and __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase::Loser::sup.

Member Data Documentation

unsigned int __gnu_parallel::LoserTreeBase< T , Comparator >::_M_log_k [protected, inherited]

log_2{k}

Definition at line 74 of file losertree.h.

Comparator __gnu_parallel::LoserTreeBase< T , Comparator >::comp [protected, inherited]

Comparator to use.

Definition at line 80 of file losertree.h.

bool __gnu_parallel::LoserTreeBase< T , Comparator >::first_insert [protected, inherited]

State flag that determines whether the LoserTree is empty.

Only used for building the LoserTree.

Definition at line 87 of file losertree.h.

Loser* __gnu_parallel::LoserTreeBase< T , Comparator >::losers [protected, inherited]

LoserTree elements.

Definition at line 77 of file losertree.h.

Author

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