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File indexing completed on 2021-02-14 12:51:12

0001 #include <algorithm>
0002 #include "FWCore/Utilities/interface/Exception.h"
0003 
0004 #include "CondFormats/HcalObjects/interface/HcalPolynomialFunctor.h"
0005 
0006 HcalPolynomialFunctor::HcalPolynomialFunctor() : shift_(0.0), xmin_(-DBL_MAX), xmax_(DBL_MAX), outOfRangeValue_(0.0) {}
0007 
0008 HcalPolynomialFunctor::HcalPolynomialFunctor(const std::vector<double>& coeffs,
0009                                              const double shift,
0010                                              const double xmin,
0011                                              const double xmax,
0012                                              const double outOfRangeValue)
0013     : coeffs_(coeffs), shift_(shift), xmin_(xmin), xmax_(xmax), outOfRangeValue_(outOfRangeValue) {}
0014 
0015 double HcalPolynomialFunctor::operator()(const double x) const {
0016   double result = outOfRangeValue_;
0017   if (x >= xmin_ && x <= xmax_) {
0018     result = 0.0;
0019     if (!coeffs_.empty()) {
0020       const double* a = &coeffs_[0];
0021       const double y = x + shift_;
0022       for (int deg = coeffs_.size() - 1; deg >= 0; --deg) {
0023         result *= y;
0024         result += a[deg];
0025       }
0026     }
0027   }
0028   return result;
0029 }
0030 
0031 BOOST_CLASS_EXPORT_IMPLEMENT(HcalPolynomialFunctor)