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Higher precision stats output #184

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Merged
haykh merged 3 commits into from
Mar 10, 2026
Merged

Higher precision stats output #184

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9034acb
added option to output stats at higher precision
LudwigBoess Mar 6, 2026
38a42f8
use fixed `io_precision` for single and double precision
LudwigBoess Mar 9, 2026
d4453fd
Merge branch '1.4.0rc' into dev/stats_precision
LudwigBoess Mar 9, 2026
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12 changes: 8 additions & 4 deletions src/output/stats.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -79,17 +79,21 @@ namespace stats {

void Writer::writeHeader() {
CallOnce(
[](auto& fname, auto& stat_writers) {
[this](auto& fname, auto& stat_writers) {
std::fstream StatsOut(fname, std::fstream::out | std::fstream::app);
StatsOut << std::setw(14) << "step" << "," << std::setw(14) << "time"
StatsOut << std::setw(io_precision + 8)
<< "step"
<< ","
<< std::setw(io_precision + 8)
<< "time"
<< ",";
for (const auto& stat : stat_writers) {
if (stat.is_vector()) {
for (auto i { 0u }; i < stat.comp.size(); ++i) {
StatsOut << std::setw(14) << stat.name(i) << ",";
StatsOut << std::setw(io_precision + 8) << stat.name(i) << ",";
}
} else {
StatsOut << std::setw(14) << stat.name() << ",";
StatsOut << std::setw(io_precision + 8) << stat.name() << ",";
}
}
StatsOut << std::endl;
Expand Down
33 changes: 25 additions & 8 deletions src/output/stats.h
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Original file line number Diff line number Diff line change
Expand Up @@ -151,6 +151,8 @@ namespace stats {
tools::Tracker m_tracker;

public:
const int io_precision = 18;

Writer() {}

~Writer() = default;
Expand Down Expand Up @@ -185,14 +187,29 @@ namespace stats {
(void)communicate;
tot_value = value;
#endif
CallOnce(
[](auto&& fname, auto&& value) {
std::fstream StatsOut(fname, std::fstream::out | std::fstream::app);
StatsOut << std::setw(14) << value << ",";
StatsOut.close();
},
m_fname,
tot_value);

if constexpr (std::is_floating_point_v<T>) {
CallOnce(
[this](auto&& fname, auto&& value) {
std::fstream StatsOut(fname, std::fstream::out | std::fstream::app);
StatsOut << std::setw(io_precision + 8)
<< std::setprecision(io_precision)
<< value
<< ",";
StatsOut.close();
},
m_fname,
tot_value);
} else {
CallOnce(
[this](auto&& fname, auto&& value) {
std::fstream StatsOut(fname, std::fstream::out | std::fstream::app);
StatsOut << std::setw(io_precision + 8) << value << ",";
StatsOut.close();
},
m_fname,
tot_value);
}
}

void endWriting();
Expand Down