This file is indexed.

/usr/include/CLHEP/Vector/BoostY.h is in libclhep-dev 2.1.4.1-1.2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
// -*- C++ -*-
//
// This file is a part of the CLHEP - a Class Library for High Energy Physics.
//
// This is the definition of the HepBoostY class for performing specialized
// Lorentz transformations which are pure boosts in the Y direction, on 
// objects of the HepLorentzVector class.
//
// HepLorentzRotation is a concrete implementation of Hep4RotationInterface.
//
// .SS See Also
// RotationInterfaces.h
// LorentzVector.h LorentzRotation.h 
// Boost.h 
//
// .SS Author
// Mark Fischler

#ifndef HEP_BOOSTY_H
#define HEP_BOOSTY_H

#ifdef GNUPRAGMA
#pragma interface
#endif

#include "CLHEP/Vector/defs.h" 
#include "CLHEP/Vector/RotationInterfaces.h"
#include "CLHEP/Vector/LorentzVector.h"

namespace CLHEP  {

// Declarations of classes and global methods
class HepBoostY;               
inline HepBoostY inverseOf ( const HepBoostY & b ); 
class HepBoost;
class HepRotation;

/**
 * @author
 * @ingroup vector
 */
class HepBoostY {

public:

  // ----------  Constructors and Assignment:

  inline HepBoostY();
  // Default constructor. Gives a boost of 0.  

  inline HepBoostY(const HepBoostY & b);
  // Copy constructor.

  inline HepBoostY & operator = (const HepBoostY & m);
  // Assignment.

         HepBoostY & set (double beta);
  inline HepBoostY       (double beta);
  // Constructor from beta 

  // ----------  Accessors:

  inline double  beta()  const;
  inline double  gamma() const;
  inline Hep3Vector boostVector() const;
  inline Hep3Vector getDirection() const;

  inline double xx() const;
  inline double xy() const;
  inline double xz() const;
  inline double xt() const;
  inline double yx() const;
  inline double yy() const;
  inline double yz() const;
  inline double yt() const;
  inline double zx() const;
  inline double zy() const;
  inline double zz() const;
  inline double zt() const;
  inline double tx() const;
  inline double ty() const;
  inline double tz() const;
  inline double tt() const;
  // Elements of the matrix.

  inline HepLorentzVector col1() const;
  inline HepLorentzVector col2() const;
  inline HepLorentzVector col3() const;
  inline HepLorentzVector col4() const;
  // orthosymplectic column vectors

  inline HepLorentzVector row1() const;
  inline HepLorentzVector row2() const;
  inline HepLorentzVector row3() const;
  inline HepLorentzVector row4() const;
  // orthosymplectic row vectors

  HepRep4x4 rep4x4() const;
  //   4x4 representation:

  HepRep4x4Symmetric rep4x4Symmetric() const;
  //   Symmetric 4x4 representation.


  // ----------  Decomposition:

  void decompose (HepRotation  & rotation, HepBoost   & boost) const;
  void decompose (HepAxisAngle & rotation, Hep3Vector & boost) const;
  // Find R and B such that L = R*B -- trivial, since R is identity

  void decompose (HepBoost  & boost, HepRotation   & rotation) const;
  void decompose (Hep3Vector & boost, HepAxisAngle & rotation) const;
  // Find R and B such that L = B*R -- trivial, since R is identity

  // ----------  Comparisons:

  inline int compare( const HepBoostY & b  ) const;
  // Dictionary-order comparison, in order of beta. 
  // Used in operator<, >, <=, >=

  inline bool operator == (const HepBoostY & b) const;
  inline bool operator != (const HepBoostY & b) const;
  inline bool operator <= (const HepBoostY & b) const;
  inline bool operator >= (const HepBoostY & b) const;
  inline bool operator <  (const HepBoostY & b) const;
  inline bool operator >  (const HepBoostY & b) const;
  // Comparisons.

  inline bool isIdentity() const;
  // Returns true if a null boost.

  inline  double distance2( const HepBoostY & b ) const;
  	  double distance2( const HepBoost & b ) const;
  // Defined as the distance2 between the vectors (gamma*betaVector)

  double distance2( const HepRotation & r  ) const;
  double distance2( const HepLorentzRotation & lt  ) const;
  // Decompose lt = B*R; add norm2 to distance2 to between boosts.

  inline double howNear(   const HepBoostY & b ) const;
  inline double howNear(   const HepBoost  & b ) const;
  inline double howNear(   const HepRotation & r ) const;
  inline double howNear(   const HepLorentzRotation & lt ) const;

  inline bool isNear(   const HepBoostY & b,
             double epsilon=Hep4RotationInterface::tolerance) const;
  inline bool isNear(   const HepBoost & b,
             double epsilon=Hep4RotationInterface::tolerance) const;
  bool isNear(   const HepRotation & r,
             double epsilon=Hep4RotationInterface::tolerance) const;
  bool isNear(   const HepLorentzRotation & lt,
             double epsilon=Hep4RotationInterface::tolerance) const;

  // ----------  Properties:

  inline double norm2() const;
  // distance2 (IDENTITY), which is beta^2 * gamma^2

  void rectify();
  // sets according to the stored beta

  // ---------- Application:

  inline HepLorentzVector operator()( const HepLorentzVector & w ) const;
  // Transform a Lorentz Vector.             

  inline HepLorentzVector operator* ( const HepLorentzVector & w ) const;
  // Multiplication with a Lorentz Vector.

  // ---------- Operations in the group of 4-Rotations

  HepBoostY   operator * (const HepBoostY & b) const;
  HepLorentzRotation operator * (const HepBoost & b) const;
  HepLorentzRotation operator * (const HepRotation & r) const;
  HepLorentzRotation operator * (const HepLorentzRotation & lt) const;
  // Product of two Lorentz Rotations (this) * lt - matrix multiplication
  // Notice that the product of two pure boosts in different directions
  // is no longer a pure boost.

  inline HepBoostY inverse() const;
  // Return the inverse.

  inline friend HepBoostY inverseOf ( const HepBoostY & b );
  // global methods to invert.

  inline HepBoostY & invert();
  // Inverts the Boost matrix.

  // ---------- I/O:

  std::ostream & print( std::ostream & os ) const;
  // Output form is BOOSTY (beta=..., gamma=...);  

  // ---------- Tolerance

  static inline double getTolerance();
  static inline double setTolerance(double tol);

protected:

  inline HepLorentzVector vectorMultiplication
                                        ( const HepLorentzVector & w ) const;
  // Multiplication with a Lorentz Vector.

  HepLorentzRotation matrixMultiplication (const HepRep4x4 & m) const;
  HepLorentzRotation matrixMultiplication (const HepRep4x4Symmetric & m) const;
                   
  inline HepBoostY (double beta, double gamma);

  double  beta_;
  double  gamma_;

};  // HepBoostY

inline   
std::ostream & operator << 
	( std::ostream & os, const HepBoostY& b ) {return b.print(os);}

}  // namespace CLHEP

#include "CLHEP/Vector/BoostY.icc"

#ifdef ENABLE_BACKWARDS_COMPATIBILITY
//  backwards compatibility will be enabled ONLY in CLHEP 1.9
using namespace CLHEP;
#endif

#endif /* HEP_BOOSTY_H */