randogoth/qngmeter
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fix: count tested bits, print final results at end of input, show entropy chi2 p-value, add CMake header

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randogoth 2026-10-25 15:34:32 +02:00
parent e3ac03e4c0
commit cfa31c9eaf
4 changed files with 50 additions and 32 deletions
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3
CMakeLists.txt
View file

@ -1,3 +1,6 @@
cmake_minimum_required(VERSION 3.10)
project(qngmeter CXX)
option(QNGMETER "Build qngMeter program" ON)
if (QNGMETER)

75
QNGmeter.cpp
View file

@ -148,7 +148,10 @@ int main()
if (!newBuffer->empty()) {
#pragma omp critical
dataQueue.push(newBuffer);
{
dataQueue.push(newBuffer);
bitsThroughputCount += 32.0 * newBuffer->size();
}
}
}
doExit = true; // Exit if stdin closes or reaches EOF
@ -158,34 +161,8 @@ int main()
#pragma omp section
{
// This section processes the enqueued data
while (!doExit || !dataQueue.empty()) {
shared_ptr<vector<uint32_t>> testBuffer = nullptr;
#pragma omp critical
{
if (!dataQueue.empty()) {
testBuffer = dataQueue.front();
dataQueue.pop();
}
}
if (testBuffer != nullptr) {
// Parallel processing of the testBuffer
#pragma omp parallel sections num_threads(4)
{
#pragma omp section
{ for (uint32_t value : *testBuffer) biasAndAc.InsertWord32(value); }
#pragma omp section
{ for (uint32_t value : *testBuffer) oqso.InsertWord32(value); }
#pragma omp section
{ for (uint32_t value : *testBuffer) serial.InsertWord32(value); }
#pragma omp section
{ for (uint32_t value : *testBuffer) entropy.InsertWord32(value); }
}
// Display results
time(&timeNow);
if (difftime(timeNow, timePrev) >= 10)
{
// Computes the meta tests and meter, then prints the results table.
auto report = [&]() {
// calc rates
#ifdef _WIN32
QueryPerformanceCounter(&nowCount);
@ -293,7 +270,7 @@ int main()
cout << " | | 1/0 Balance " << setiosflags(ios::fixed) << setprecision(3) << showpos << biasAndAc.Bias.cumulativeBiasZScore << " " << setprecision(4) << noshowpos << CStat::ZtoP(biasAndAc.Bias.cumulativeBiasZScore) << " " << biasAndAc.Bias.P_Chi2 << " |" << endl;
cout << " | | Serial Test " << setiosflags(ios::fixed) << setprecision(3) << showpos << serialZ << " " << setprecision(4) << noshowpos << serialP << " " << serial.P_Chi2 << " |" << endl;
cout << " | | OQSO Test " << setiosflags(ios::fixed) << setprecision(3) << showpos << oqso.cumulativeZScore << " " << setprecision(4) << noshowpos << CStat::ZtoP(oqso.cumulativeZScore) << " " << oqso.P_Chi2 << " |" << endl;
cout << " | | Entropy Test " << setiosflags(ios::fixed) << setprecision(3) << showpos << entropy.cumulativeZScore << " " << setprecision(4) << noshowpos << CStat::ZtoP(entropy.cumulativeZScore) << " " << serial.P_Chi2 << " |" << endl;
cout << " | | Entropy Test " << setiosflags(ios::fixed) << setprecision(3) << showpos << entropy.cumulativeZScore << " " << setprecision(4) << noshowpos << CStat::ZtoP(entropy.cumulativeZScore) << " " << entropy.P_Chi2 << " |" << endl;
cout << " | | H: " << setiosflags(ios::fixed) << setprecision(9) << entropy.E << " |" << endl;
cout << " | | |" << endl;
@ -347,7 +324,8 @@ int main()
default:
cout << " | |";
}
cout << " " << setw(2) << i << "st AutoCorr " << setiosflags(ios::fixed) << setprecision(3) << showpos << biasAndAc.AC.cumulativeACZScore[i-1] << " " << setprecision(4) << noshowpos << CStat::ZtoP(biasAndAc.AC.cumulativeACZScore[i-1]) << " " << biasAndAc.AC.P_Chi2[i-1] << " |" << endl;
const char *suffix = (i % 10 == 1 && i != 11) ? "st" : (i % 10 == 2 && i != 12) ? "nd" : (i % 10 == 3 && i != 13) ? "rd" : "th";
cout << " " << setw(2) << i << suffix << " AutoCorr " << setiosflags(ios::fixed) << setprecision(3) << showpos << biasAndAc.AC.cumulativeACZScore[i-1] << " " << setprecision(4) << noshowpos << CStat::ZtoP(biasAndAc.AC.cumulativeACZScore[i-1]) << " " << biasAndAc.AC.P_Chi2[i-1] << " |" << endl;
}
cout << " +---------------------------+------------------------------------------------+" << endl;
@ -365,8 +343,39 @@ int main()
timePrev = timeNow;
cout.flush();
};
while (!doExit || !dataQueue.empty()) {
shared_ptr<vector<uint32_t>> testBuffer = nullptr;
#pragma omp critical
{
if (!dataQueue.empty()) {
testBuffer = dataQueue.front();
dataQueue.pop();
}
}
if (testBuffer != nullptr) {
// Parallel processing of the testBuffer
#pragma omp parallel sections num_threads(4)
{
#pragma omp section
{ for (uint32_t value : *testBuffer) biasAndAc.InsertWord32(value); }
#pragma omp section
{ for (uint32_t value : *testBuffer) oqso.InsertWord32(value); }
#pragma omp section
{ for (uint32_t value : *testBuffer) serial.InsertWord32(value); }
#pragma omp section
{ for (uint32_t value : *testBuffer) entropy.InsertWord32(value); }
}
bitsTestedCount += 32.0 * testBuffer->size();
// Display results every 10 seconds
time(&timeNow);
if (difftime(timeNow, timePrev) >= 10)
report();
// End on an 'x' keypress
#ifdef _WIN32
if (kbhit())
@ -390,6 +399,10 @@ int main()
usleep(1000);
}
}
// Final results when the input ends (or on CTRL-C)
time(&timeNow);
report();
}
}
}

2
RandTest/Entropy.cpp
View file

@ -34,7 +34,7 @@ double CEntropy::CalcStandardDeviation(uint32_t K, uint32_t m)
data[8][1] = 3.4075860; data[8][2] = 0.3901408; data[8][3] = 0.3606982;
data[9][1] = 3.4149476; data[9][2] = 0.3909846; data[9][3] = 0.3600222;
data[10][1] = 3.4189794; data[10][2] = 0.3914671; data[10][3] = 0.3596484;
data[11][1] = 3.4211711; data[11][2] = 0.3917390; data[11][1] = 0.3594433;
data[11][1] = 3.4211711; data[11][2] = 0.3917390; data[11][3] = 0.3594433;
data[12][1] = 3.4223549; data[12][2] = 0.3918905; data[12][3] = 0.3593316;
data[13][1] = 3.4229908; data[13][2] = 0.3919740; data[13][3] = 0.3592712;
data[14][1] = 3.4233308; data[14][2] = 0.3920198; data[14][3] = 0.3592384;

2
readme.md
View file

@ -18,6 +18,8 @@ $ dd if=/dev/urandom of=random_data.bin bs=4096 count=4096
$ cat random_data.bin | ./qngmeter
```
The results table is printed every 10 seconds while data arrives and once more when the input ends (or on CTRL-C). Bytes are read as little-endian 32-bit words, least significant bit first, so within each byte the bits are tested in reverse order; this only matters for the autocorrelation lags of non-random data.
## Output
```sh