Go to the documentation of this file.00001 #ifndef RealQuadEquation_H
00002 #define RealQuadEquation_H
00003
00004 #include <utility>
00005 #include <cmath>
00006 #include "FWCore/Utilities/interface/Visibility.h"
00007
00012 struct dso_internal RealQuadEquation {
00013
00014 bool hasSolution;
00015 double first;
00016 double second;
00017
00018 RealQuadEquation( double A, double B, double C) {
00019 double D = B*B - 4*A*C;
00020 if (D<0) hasSolution = false;
00021 else {
00022 hasSolution = true;
00023 double q = -0.5*(B + (B>0 ? sqrt(D) : -sqrt(D)));
00024 first = q/A;
00025 second = C/q;
00026 }
00027 }
00028
00029 };
00030
00031 #endif
1.7.3