operations_research::CachedLog Class Reference

This class is used when manipulating search space estimations. More...

#include <cached_log.h>

List of all members.

Public Member Functions
	CachedLog ()
	~CachedLog ()
void	Init (int cache_size)
	This method can only be called once, and with a cache_size > 0.
double	Log2 (int64 input) const
	Returns the log2 of 'input'.

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Detailed Description

This class is used when manipulating search space estimations.

It provides fast access to log of a domain size. Future Extensions:

• Sum of log on an array.
• Sum of log on an array with callback.

Definition at line 32 of file cached_log.h.

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Constructor & Destructor Documentation

operations_research::CachedLog::CachedLog

(

)

Definition at line 20 of file cached_log.cc.

operations_research::CachedLog::~CachedLog

(

)

Definition at line 22 of file cached_log.cc.

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Member Function Documentation

void operations_research::CachedLog::Init

(

int

cache_size

)

This method can only be called once, and with a cache_size > 0.

Definition at line 34 of file cached_log.cc.

double operations_research::CachedLog::Log2

(

int64

input

)

const

Returns the log2 of 'input'.

Definition at line 43 of file cached_log.cc.

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

• or-tools/src/util/cached_log.h
• or-tools/src/util/cached_log.cc