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#ifndef CondFormats_PhysicsToolsObjects_Histogram_icc
#define CondFormats_PhysicsToolsObjects_Histogram_icc
#include <cmath>
#include <cstddef>
#include <algorithm>
#include <numeric>
#include <vector>
#include "FWCore/Utilities/interface/Exception.h"
#include "CondFormats/PhysicsToolsObjects/interface/Histogram.h"
namespace PhysicsTools {
namespace Calibration {
namespace { // hide when instantiated in -O0 debug mode
template <typename T>
inline const T &clamp(const T &min, const T &val, const T &max) {
if (val < min)
return min;
if (val > max)
return max;
return val;
}
} // namespace
template <typename Value_t, typename Axis_t>
Histogram<Value_t, Axis_t>::Histogram() : limits(Axis_t(), Axis_t()), total(Value_t()) {
totalValid.store(false, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
Histogram<Value_t, Axis_t>::Histogram(const Histogram &orig)
: binULimits(orig.binULimits), binValues(orig.binValues), limits(orig.limits), total(orig.total) {
totalValid.store(orig.totalValid.load(std::memory_order_acquire), std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
template <typename OValue_t, typename OAxis_t>
Histogram<Value_t, Axis_t>::Histogram(const Histogram<OValue_t, OAxis_t> &orig)
: binULimits(orig.binULimits.begin(), orig.binULimits.end()),
binValues(orig.binValues.begin(), orig.binValues.end()),
limits(orig.limits),
total(Value_t()) {
totalValid.store(false, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
Histogram<Value_t, Axis_t>::Histogram(const std::vector<Axis_t> &binULimits)
: binULimits(binULimits), binValues(binULimits.size() + 1), limits(Axis_t(), Axis_t()), total(Value_t()) {
totalValid.store(true, std::memory_order_release);
if (binULimits.size() < 2)
throw cms::Exception("TooFewBinsError") << "Trying to generate degenerate histogram: "
"Fewer than one bin requested."
<< std::endl;
limits.min = binULimits.front();
limits.max = binULimits.back();
}
template <typename Value_t, typename Axis_t>
template <typename OAxis_t>
Histogram<Value_t, Axis_t>::Histogram(const std::vector<OAxis_t> &binULimits)
: binULimits(binULimits.begin(), binULimits.end()),
binValues(binULimits.size() + 1),
limits(Axis_t(), Axis_t()),
total(Value_t()) {
totalValid.store(true, std::memory_order_release);
if (binULimits.size() < 2)
throw cms::Exception("TooFewBinsError") << "Trying to generate degenerate histogram: "
"Fewer than one bin requested."
<< std::endl;
limits.min = binULimits.front();
limits.max = binULimits.back();
}
template <typename Value_t, typename Axis_t>
template <typename OAxis_t>
Histogram<Value_t, Axis_t>::Histogram(unsigned int nBins, const PhysicsTools::Calibration::Range<OAxis_t> &range)
: binValues(nBins + 2), limits(range), total(Value_t()) {
totalValid.store(true, std::memory_order_release);
if (!nBins)
throw cms::Exception("TooFewBinsError") << "Trying to generate degenerate histogram: "
"Fewer than one bin requested."
<< std::endl;
}
template <typename Value_t, typename Axis_t>
Histogram<Value_t, Axis_t>::Histogram(unsigned int nBins, Axis_t min, Axis_t max)
: binValues(nBins + 2), limits(min, max), total(Value_t()) {
totalValid.store(true, std::memory_order_release);
if (!nBins)
throw cms::Exception("TooFewBinsError") << "Trying to generate degenerate histogram: "
"Fewer than one bin requested."
<< std::endl;
}
template <typename Value_t, typename Axis_t>
Histogram<Value_t, Axis_t>::~Histogram() {}
template <typename Value_t, typename Axis_t>
Histogram<Value_t, Axis_t> &Histogram<Value_t, Axis_t>::operator=(const Histogram &orig) {
binULimits = orig.binULimits;
binValues = orig.binValues;
limits = orig.limits;
total = orig.total;
totalValid.store(orig.totalValid.load(std::memory_order_acquire), std::memory_order_release);
return *this;
}
template <typename Value_t, typename Axis_t>
template <typename OValue_t, typename OAxis_t>
Histogram<Value_t, Axis_t> &Histogram<Value_t, Axis_t>::operator=(const Histogram<OValue_t, OAxis_t> &orig) {
binULimits = std::vector<Axis_t>(orig.binULimits.begin(), orig.binULimits.end());
binValues = std::vector<Value_t>(orig.binValues.begin(), orig.binValues.end());
limits = orig.limits;
total = orig.total;
totalValid.store(orig.totalValid.load(std::memory_order_acquire), std::memory_order_release);
return *this;
}
template <typename Value_t, typename Axis_t>
void Histogram<Value_t, Axis_t>::reset() {
std::fill(binValues.begin(), binValues.end(), Value_t());
total = Value_t();
totalValid.store(true, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
void Histogram<Value_t, Axis_t>::setBinContent(int bin, Value_t value) {
if (bin < 0 || (unsigned int)bin >= binValues.size())
throw cms::Exception("RangeError") << "Histogram bin " << bin
<< " out of range "
"[0, "
<< (binValues.size() - 1) << "]." << std::endl;
binValues[bin] = value;
totalValid.store(false, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
void Histogram<Value_t, Axis_t>::fill(Axis_t x, Value_t weight) {
int bin = findBin(x);
binValues[bin] += weight;
totalValid.store(false, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
void Histogram<Value_t, Axis_t>::setValues(const std::vector<Value_t> &values) {
if (values.size() != binValues.size())
throw cms::Exception("InvalidVectorSizeError") << "Invalid vector size while setting "
"histogram values"
<< std::endl;
binValues = values;
totalValid.store(false, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
template <typename OValue_t>
void Histogram<Value_t, Axis_t>::setValues(const std::vector<OValue_t> &values) {
if (values.size() != binValues.size())
throw cms::Exception("InvalidVectorSizeError") << "Invalid vector size while setting "
"histogram values"
<< std::endl;
std::copy(values.begin(), values.end(), binValues.begin());
totalValid.store(false, std::memory_order_release);
}
template <typename Value_t, typename Axis_t>
typename Histogram<Value_t, Axis_t>::Range Histogram<Value_t, Axis_t>::binRange(int bin) const {
std::size_t size = binValues.size();
if (bin < 1 || (unsigned int)bin > size - 2)
throw cms::Exception("RangeError") << "Histogram bin " << bin << " out of range "
<< "[1, " << (size - 2) << "]." << std::endl;
if (hasEquidistantBins()) {
Axis_t min = (Axis_t)(bin - 1) / (size - 2);
Axis_t max = (Axis_t)bin / (size - 2);
min *= limits.width();
min += limits.min;
max *= limits.width();
max += limits.min;
return Range(min, max);
} else
return Range(binULimits[bin - 1], binULimits[bin]);
}
template <typename Value_t, typename Axis_t>
int Histogram<Value_t, Axis_t>::findBin(Axis_t x) const {
if (hasEquidistantBins()) {
std::size_t size = binValues.size();
x -= limits.min;
x *= size - 2;
x /= limits.width();
return clamp(0, (int)(std::floor(x)) + 1, (int)size - 1);
} else
return std::upper_bound(binULimits.begin(), binULimits.end(), x) - binULimits.begin();
}
template <typename Value_t, typename Axis_t>
Value_t Histogram<Value_t, Axis_t>::normalization() const {
if (!totalValid.load(std::memory_order_acquire)) {
total = std::accumulate(binValues.begin() + 1, binValues.end() - 1, Value_t());
totalValid.store(true, std::memory_order_release);
}
return total;
}
template <typename Value_t, typename Axis_t>
Value_t Histogram<Value_t, Axis_t>::integral(Axis_t hBound, Axis_t lBound, int mode) const {
if (hBound < lBound)
throw cms::Exception("InvalidIntervalError") << "Upper boundary below lower boundary in "
<< "histogram integral." << std::endl;
std::size_t size = binValues.size();
int lBin = clamp(1, findBin(lBound), (int)size - 2);
int hBin = clamp(1, findBin(hBound), (int)size - 2);
double sum = Value_t();
Range lBinRange, hBinRange;
if (hBin > lBin)
sum = std::accumulate(binValues.begin() + (lBin + 1), binValues.begin() + hBin, Value_t());
if (hasEquidistantBins()) {
Axis_t binWidth = limits.width() / (size - 2);
lBinRange = Range((lBin - 1) * binWidth, lBin * binWidth);
hBinRange = Range((hBin - 1) * binWidth, hBin * binWidth);
} else {
lBinRange = Range(binULimits[lBin - 1], binULimits[lBin]);
hBinRange = Range(binULimits[hBin - 1], binULimits[hBin]);
}
switch (mode) {
case 0:
break;
case 1:
lBound = clamp(lBinRange.min, lBound, lBinRange.max);
hBound = clamp(hBinRange.min, hBound, hBinRange.max);
sum += binValues[lBin] * (lBinRange.max - lBound) / lBinRange.width();
sum += binValues[hBin] * (hBound - hBinRange.min) / hBinRange.width();
break;
default:
throw cms::Exception("InvalidMode") << "Invalid mode " << mode
<< " in "
"Histogram::integral()"
<< std::endl;
}
return sum;
}
} // namespace Calibration
} // namespace PhysicsTools
#endif // CondFormats_PhysicsToolsObjects_Histogram_icc
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