__gnu_parallel::LoserTreeBase< T, Comparator > Class Template Reference

Inheritance diagram for __gnu_parallel::LoserTreeBase< T, Comparator >:

Inheritance graph

List of all members.


Detailed Description

template<typename T, typename Comparator>
class __gnu_parallel::LoserTreeBase< T, Comparator >

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.

Parameters:
T the element type
Comparator the comparator to use, defaults to std::less<T>

Definition at line 63 of file losertree.h.

Public Member Functions

Protected Attributes

Classes


Constructor & Destructor Documentation

template<typename T, typename Comparator>
__gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase ( unsigned int  _k,
Comparator  _comp 
) [inline]

The constructor.

Parameters:
_k The number of sequences to merge.
_comp The comparator to use.

Definition at line 102 of file losertree.h.

References __gnu_parallel::LoserTreeBase< T, Comparator >::_M_log_k, __gnu_parallel::LoserTreeBase< T, Comparator >::first_insert, __gnu_parallel::log2(), and __gnu_parallel::LoserTreeBase< T, Comparator >::losers.

template<typename T, typename Comparator>
__gnu_parallel::LoserTreeBase< T, Comparator >::~LoserTreeBase (  )  [inline]

The destructor.

Definition at line 125 of file losertree.h.

References __gnu_parallel::LoserTreeBase< T, Comparator >::losers.


Member Function Documentation

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

Returns:
the index of the sequence with the smallest element.

Definition at line 158 of file losertree.h.

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

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

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 137 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.


Member Data Documentation

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

log_2{k}

Definition at line 80 of file losertree.h.

Referenced by __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase().

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

Comparator to use.

Definition at line 86 of file losertree.h.

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

State flag that determines whether the LoserTree is empty.

Only used for building the LoserTree.

Definition at line 93 of file losertree.h.

Referenced by __gnu_parallel::LoserTreeBase< T, Comparator >::insert_start(), and __gnu_parallel::LoserTreeBase< T, Comparator >::LoserTreeBase().

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


The documentation for this class was generated from the following file:

Generated on Fri Jan 23 20:12:46 2009 for libstdc++ by  doxygen 1.5.6