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and const 2 more functions

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This commit is contained in:
Bernhard Amann 2013-09-16 11:00:54 -07:00
parent c0f780c728
commit ecc20b932a
2 changed files with 4 additions and 4 deletions
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4
src/probabilistic/CardinalityCounter.cc
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@ -10,7 +10,7 @@
using namespace probabilistic; using namespace probabilistic;
int CardinalityCounter::OptimalB(double error, double confidence) int CardinalityCounter::OptimalB(double error, double confidence) const
{ {
double initial_estimate = 2 * (log(1.04) - log(error)) / log(2); double initial_estimate = 2 * (log(1.04) - log(error)) / log(2);
int answer = (int) floor(initial_estimate); int answer = (int) floor(initial_estimate);
@ -87,7 +87,7 @@ CardinalityCounter::~CardinalityCounter()
delete [] buckets; delete [] buckets;
} }
uint8_t CardinalityCounter::Rank(uint64 hash_modified) uint8_t CardinalityCounter::Rank(uint64 hash_modified) const
{ {
uint8_t answer = 0; uint8_t answer = 0;

4
src/probabilistic/CardinalityCounter.h
View file

@ -147,7 +147,7 @@ private:
* *
* @return minimal B-value satisfying the error-rate under confidence. * @return minimal B-value satisfying the error-rate under confidence.
*/ */
int OptimalB(double error, double confidence); int OptimalB(double error, double confidence) const;
/** /**
* Determines at which index (counted from the back) the first one-bit * Determines at which index (counted from the back) the first one-bit
@ -158,7 +158,7 @@ private:
* *
* @returns index of first one-bit * @returns index of first one-bit
*/ */
uint8_t Rank(uint64 hash_modified); uint8_t Rank(uint64 hash_modified) const;
/** /**
* This is the number of buckets that will be stored. The standard * This is the number of buckets that will be stored. The standard