Trk::RealQuadraticEquation Struct Reference

#include <RealQuadraticEquation.h>

Collaboration diagram for Trk::RealQuadraticEquation:

Public Member Functions
	RealQuadraticEquation (double alpha, double beta, double gamma)
	RealQuadraticEquation (double alpha, double beta, double gamma)

Public Attributes
double	first
double	second
RQESolutionType	solutions

Detailed Description

Definition at line 51 of file TrkDetDescr/TrkSurfaces/TrkSurfaces/RealQuadraticEquation.h.

Constructor & Destructor Documentation

RealQuadraticEquation() [1/2]

Trk::RealQuadraticEquation::RealQuadraticEquation ( double alpha, double beta, double gamma )

inline

Definition at line 58 of file TrkDetDescr/TrkSurfaces/TrkSurfaces/RealQuadraticEquation.h.

    : first(0.)
    , second(0.)
  {
    double discriminant = beta * beta - 4 * alpha * gamma;
    if (discriminant < 0)
      solutions = none;
    else {
      solutions = (discriminant == 0) ? one : two;
      double q = -0.5 * (beta + (beta > 0 ? sqrt(discriminant) : -sqrt(discriminant)));
      first = q / alpha;
      second = gamma / q;
    }
  }

RealQuadraticEquation() [2/2]

Trk::RealQuadraticEquation::RealQuadraticEquation ( double alpha, double beta, double gamma )

inline

Definition at line 60 of file TrkExtrapolation/TrkExUtils/TrkExUtils/RealQuadraticEquation.h.

    : first{}
    , second{}
  {
    double discriminant = beta * beta - 4 * alpha * gamma;
    if (discriminant < 0)
      solutions = none;
    else {
      solutions = (discriminant == 0) ? one : two;
      double q =
        -0.5 * (beta + (beta > 0 ? sqrt(discriminant) : -sqrt(discriminant)));
      first = q / alpha;
      second = gamma / q;
    }
  }

Member Data Documentation

first

double Trk::RealQuadraticEquation::first

Definition at line 54 of file TrkDetDescr/TrkSurfaces/TrkSurfaces/RealQuadraticEquation.h.

second

double Trk::RealQuadraticEquation::second

Definition at line 55 of file TrkDetDescr/TrkSurfaces/TrkSurfaces/RealQuadraticEquation.h.

solutions

RQESolutionType Trk::RealQuadraticEquation::solutions

Definition at line 56 of file TrkDetDescr/TrkSurfaces/TrkSurfaces/RealQuadraticEquation.h.

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The documentation for this struct was generated from the following files:

• TrkDetDescr/TrkSurfaces/TrkSurfaces/RealQuadraticEquation.h
• TrkExtrapolation/TrkExUtils/TrkExUtils/RealQuadraticEquation.h