EvtValError Class Reference

#include <EvtValError.hh>

List of all members.

Public Member Functions

 EvtValError ()
 EvtValError (double val)
 EvtValError (double val, double err)
 EvtValError (const EvtValError &other)
 ~EvtValError ()
int valueKnown () const
double value () const
int errorKnown () const
double error () const
double prec () const
void operator= (const EvtValError &other)
void operator *= (const EvtValError &other)
void operator/= (const EvtValError &other)
void operator+= (const EvtValError &other)
void operator *= (double c)
void print (std::ostream &) const

Private Attributes

int _valKnown
double _val
int _errKnown
double _err

Detailed Description

Definition at line 20 of file EvtValError.hh.

Constructor & Destructor Documentation

EvtValError::EvtValError (  ) 

Definition at line 18 of file EvtValError.cc.

00019   : _valKnown(0), _val(0.), _errKnown(0), _err(0.)
00020 {}

EvtValError::EvtValError ( double  val  ) 

Definition at line 22 of file EvtValError.cc.

00023   : _valKnown(1), _val(val), _errKnown(0), _err(0.)
00024 {}

EvtValError::EvtValError ( double  val,
double  err 
)

Definition at line 26 of file EvtValError.cc.

00027   : _valKnown(1), _val(val), _errKnown(1), _err(err)
00028 {}

EvtValError::EvtValError ( const EvtValError &  other  ) 

Definition at line 30 of file EvtValError.cc.

00031   : _valKnown(other._valKnown), _val(other._val), 
00032   _errKnown(other._errKnown), _err(other._err)
00033 {}

EvtValError::~EvtValError (  ) 

Definition at line 35 of file EvtValError.cc.

00036 {}

Member Function Documentation

double EvtValError::error (  )  const [inline]

Definition at line 33 of file EvtValError.hh.

References _err, and _errKnown.

00033 { assert(_errKnown); return _err; }

int EvtValError::errorKnown (  )  const [inline]

Definition at line 32 of file EvtValError.hh.

References _errKnown.

00032 { return _errKnown; }

void EvtValError::operator *= ( double  c  ) 

Definition at line 107 of file EvtValError.cc.

References _err, _errKnown, and _valKnown.

00107                                      {
00108   
00109   assert(_valKnown);
00110   _val *= c;
00111   if(_errKnown) _err*=c;
00112 }

void EvtValError::operator *= ( const EvtValError &  other  ) 

Definition at line 52 of file EvtValError.cc.

References _err, _errKnown, _val, _valKnown, EvtCyclic3::other(), and prec().

00053 {
00054   assert(_valKnown && other._valKnown);
00055 
00056   // Relative errors add in quadrature
00057   if(_errKnown && other._errKnown)
00058     _err = _val * other._val * sqrt(prec()*prec() + other.prec() * other.prec());
00059   else _errKnown = 0;
00060   
00061   // Modify the value  
00062   _val *= other._val;
00063 }

void EvtValError::operator+= ( const EvtValError &  other  ) 

Definition at line 90 of file EvtValError.cc.

References _err, _errKnown, _valKnown, and EvtCyclic3::other().

00091 {
00092   assert(_valKnown); assert(other._valKnown);
00093   _val += other._val;
00094   
00095     // add errors in quadrature
00096   
00097   if(_errKnown && other._errKnown) {
00098 
00099     _err = sqrt(_err*_err + other._err*other._err);
00100   }
00101   else {
00102     
00103       _errKnown = 0;
00104   }
00105 }

void EvtValError::operator/= ( const EvtValError &  other  ) 

Definition at line 65 of file EvtValError.cc.

References _err, _errKnown, _val, _valKnown, EvtCyclic3::other(), and prec().

00066 {
00067   assert(_valKnown && other._valKnown && other._val != 0.);
00068 
00069   // Relative errors add in quadrature
00070   if(_errKnown && other._errKnown)
00071     _err = _val/other._val * sqrt(prec()*prec() + other.prec() * other.prec());
00072   else _errKnown = 0;
00073   
00074   // Modify the value  
00075   _val /= other._val;
00076 }

void EvtValError::operator= ( const EvtValError &  other  ) 

Definition at line 44 of file EvtValError.cc.

References _err, _errKnown, _val, _valKnown, and EvtCyclic3::other().

00045 {
00046   _valKnown = other._valKnown;
00047   _val = other._val;
00048   _errKnown = other._errKnown;
00049   _err = other._err;
00050 }

double EvtValError::prec (  )  const

Definition at line 38 of file EvtValError.cc.

References _err, _errKnown, _val, and _valKnown.

Referenced by operator *=(), and operator/=().

00039 { 
00040   assert(_valKnown && _errKnown); 
00041   return ( _val != 0) ? _err/_val : 0; 
00042 }

void EvtValError::print ( std::ostream &   )  const

double EvtValError::value (  )  const [inline]

Definition at line 31 of file EvtValError.hh.

References _val, and _valKnown.

Referenced by EvtPdfSum< T >::randomPoint().

00031 { assert(_valKnown); return _val; }

int EvtValError::valueKnown (  )  const [inline]

Definition at line 30 of file EvtValError.hh.

References _valKnown.

Referenced by EvtPdf< EvtPoint1D >::getItg(), and EvtPdfSum< T >::randomPoint().

00030 { return _valKnown; }

Member Data Documentation

double EvtValError::_err [private]

Definition at line 49 of file EvtValError.hh.

Referenced by error(), operator *=(), operator+=(), operator/=(), operator=(), and prec().

int EvtValError::_errKnown [private]

Definition at line 48 of file EvtValError.hh.

Referenced by error(), errorKnown(), operator *=(), operator+=(), operator/=(), operator=(), and prec().

double EvtValError::_val [private]

Definition at line 47 of file EvtValError.hh.

Referenced by operator *=(), operator/=(), operator=(), prec(), and value().

int EvtValError::_valKnown [private]

Definition at line 46 of file EvtValError.hh.

Referenced by operator *=(), operator+=(), operator/=(), operator=(), prec(), value(), and valueKnown().

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