diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.test.include | 1 | ||||
| -rw-r--r-- | src/test/timedata_tests.cpp | 38 | ||||
| -rw-r--r-- | src/test/util_tests.cpp | 25 | ||||
| -rw-r--r-- | src/timedata.h | 59 | ||||
| -rw-r--r-- | src/util.h | 56 |
5 files changed, 98 insertions, 81 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include index cc407f679f..b4360831bb 100644 --- a/src/Makefile.test.include +++ b/src/Makefile.test.include @@ -61,6 +61,7 @@ BITCOIN_TESTS =\ test/sigopcount_tests.cpp \ test/skiplist_tests.cpp \ test/test_bitcoin.cpp \ + test/timedata_tests.cpp \ test/transaction_tests.cpp \ test/uint256_tests.cpp \ test/univalue_tests.cpp \ diff --git a/src/test/timedata_tests.cpp b/src/test/timedata_tests.cpp new file mode 100644 index 0000000000..aa4fa0d500 --- /dev/null +++ b/src/test/timedata_tests.cpp @@ -0,0 +1,38 @@ +// Copyright (c) 2011-2014 The Bitcoin Core developers +// Distributed under the MIT/X11 software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. +// +#include "timedata.h" + +#include <boost/test/unit_test.hpp> + +using namespace std; + +BOOST_AUTO_TEST_SUITE(timedata_tests) + +BOOST_AUTO_TEST_CASE(util_MedianFilter) +{ + CMedianFilter<int> filter(5, 15); + + BOOST_CHECK_EQUAL(filter.median(), 15); + + filter.input(20); // [15 20] + BOOST_CHECK_EQUAL(filter.median(), 17); + + filter.input(30); // [15 20 30] + BOOST_CHECK_EQUAL(filter.median(), 20); + + filter.input(3); // [3 15 20 30] + BOOST_CHECK_EQUAL(filter.median(), 17); + + filter.input(7); // [3 7 15 20 30] + BOOST_CHECK_EQUAL(filter.median(), 15); + + filter.input(18); // [3 7 18 20 30] + BOOST_CHECK_EQUAL(filter.median(), 18); + + filter.input(0); // [0 3 7 18 30] + BOOST_CHECK_EQUAL(filter.median(), 7); +} + +BOOST_AUTO_TEST_SUITE_END() diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp index 068b9f29c8..31fcd3e92a 100644 --- a/src/test/util_tests.cpp +++ b/src/test/util_tests.cpp @@ -36,31 +36,6 @@ BOOST_AUTO_TEST_CASE(util_criticalsection) } while(0); } -BOOST_AUTO_TEST_CASE(util_MedianFilter) -{ - CMedianFilter<int> filter(5, 15); - - BOOST_CHECK_EQUAL(filter.median(), 15); - - filter.input(20); // [15 20] - BOOST_CHECK_EQUAL(filter.median(), 17); - - filter.input(30); // [15 20 30] - BOOST_CHECK_EQUAL(filter.median(), 20); - - filter.input(3); // [3 15 20 30] - BOOST_CHECK_EQUAL(filter.median(), 17); - - filter.input(7); // [3 7 15 20 30] - BOOST_CHECK_EQUAL(filter.median(), 15); - - filter.input(18); // [3 7 18 20 30] - BOOST_CHECK_EQUAL(filter.median(), 18); - - filter.input(0); // [0 3 7 18 30] - BOOST_CHECK_EQUAL(filter.median(), 7); -} - static const unsigned char ParseHex_expected[65] = { 0x04, 0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, 0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, 0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, 0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, diff --git a/src/timedata.h b/src/timedata.h index 0e7bdc2c1f..d0c84b3183 100644 --- a/src/timedata.h +++ b/src/timedata.h @@ -6,9 +6,68 @@ #define BITCOIN_TIMEDATA_H #include <stdint.h> +#include <vector> +#include <algorithm> +#include <assert.h> class CNetAddr; +/** Median filter over a stream of values. + * Returns the median of the last N numbers + */ +template <typename T> class CMedianFilter +{ +private: + std::vector<T> vValues; + std::vector<T> vSorted; + unsigned int nSize; +public: + CMedianFilter(unsigned int size, T initial_value): + nSize(size) + { + vValues.reserve(size); + vValues.push_back(initial_value); + vSorted = vValues; + } + + void input(T value) + { + if(vValues.size() == nSize) + { + vValues.erase(vValues.begin()); + } + vValues.push_back(value); + + vSorted.resize(vValues.size()); + std::copy(vValues.begin(), vValues.end(), vSorted.begin()); + std::sort(vSorted.begin(), vSorted.end()); + } + + T median() const + { + int size = vSorted.size(); + assert(size>0); + if(size & 1) // Odd number of elements + { + return vSorted[size/2]; + } + else // Even number of elements + { + return (vSorted[size/2-1] + vSorted[size/2]) / 2; + } + } + + int size() const + { + return vValues.size(); + } + + std::vector<T> sorted () const + { + return vSorted; + } +}; + /* Functions to keep track of adjusted P2P time */ int64_t GetTimeOffset(); int64_t GetAdjustedTime(); diff --git a/src/util.h b/src/util.h index 1fb42a7b7e..e813c86804 100644 --- a/src/util.h +++ b/src/util.h @@ -356,62 +356,6 @@ bool TimingResistantEqual(const T& a, const T& b) return accumulator == 0; } -/** Median filter over a stream of values. - * Returns the median of the last N numbers - */ -template <typename T> class CMedianFilter -{ -private: - std::vector<T> vValues; - std::vector<T> vSorted; - unsigned int nSize; -public: - CMedianFilter(unsigned int size, T initial_value): - nSize(size) - { - vValues.reserve(size); - vValues.push_back(initial_value); - vSorted = vValues; - } - - void input(T value) - { - if(vValues.size() == nSize) - { - vValues.erase(vValues.begin()); - } - vValues.push_back(value); - - vSorted.resize(vValues.size()); - std::copy(vValues.begin(), vValues.end(), vSorted.begin()); - std::sort(vSorted.begin(), vSorted.end()); - } - - T median() const - { - int size = vSorted.size(); - assert(size>0); - if(size & 1) // Odd number of elements - { - return vSorted[size/2]; - } - else // Even number of elements - { - return (vSorted[size/2-1] + vSorted[size/2]) / 2; - } - } - - int size() const - { - return vValues.size(); - } - - std::vector<T> sorted () const - { - return vSorted; - } -}; - #ifdef WIN32 inline void SetThreadPriority(int nPriority) { |