__gnu_parallel::LoserTreeBase(3)__gnu_parallel::LoserTreeBase(3)NAME__gnu_parallel::LoserTreeBase-
Guarded loser/tournament tree.
SYNOPSIS
Inherited by __gnu_parallel::LoserTree< stable, T, Comparator >, and
__gnu_parallel::LoserTree< false, T, Comparator >.
Classes
struct Loser
Internal representation of a LoserTree element.
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
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 57 of file losertree.h.
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 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.
template<typename T , typename Comparator > __gnu_parallel::LoserTreeBase<
T, Comparator >::~LoserTreeBase () [inline]
The destructor.
Definition at line 119 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 152 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 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.
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 74 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 80 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 87 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]
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().
Author
Generated automatically by Doxygen for libstdc++ from the source code.
libstdc++ 22 Nov 2013 __gnu_parallel::LoserTreeBase(3)
