EvtValError Class Reference

#include <EvtValError.hh>

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

Detailed Description

Definition at line 20 of file EvtValError.hh.

Constructor & Destructor Documentation

EvtValError() [1/4]

EvtValError::EvtValError

(

)

Definition at line 18 of file EvtValError.cc.

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

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

EvtValError() [2/4]

EvtValError::EvtValError

(

double

val

)

Definition at line 20 of file EvtValError.cc.

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

EvtValError() [3/4]

EvtValError::EvtValError	(	double	val,
		double	err )

Definition at line 23 of file EvtValError.cc.

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

EvtValError() [4/4]

EvtValError::EvtValError

(

const EvtValError &

other

)

Definition at line 26 of file EvtValError.cc.

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

~EvtValError()

EvtValError::~EvtValError

(

)

Definition at line 32 of file EvtValError.cc.

{}

Member Function Documentation

error()

double EvtValError::error ( ) const

inline

Definition at line 35 of file EvtValError.hh.

                              {
    assert( _errKnown );
    return _err;
  }

errorKnown()

int EvtValError::errorKnown ( ) const

inline

Definition at line 34 of file EvtValError.hh.

{ return _errKnown; }

operator*=() [1/2]

void EvtValError::operator*=

(

const EvtValError &

other

)

Definition at line 46 of file EvtValError.cc.

                                                     {
  assert( _valKnown && other._valKnown );
 
  // Relative errors add in quadrature
  if ( _errKnown && other._errKnown )
    _err = _val * other._val * sqrt( prec() * prec() + other.prec() * other.prec() );
  else _errKnown = 0;
 
  // Modify the value
  _val *= other._val;
}

operator*=() [2/2]

void EvtValError::operator*=

(

double

c

)

Definition at line 90 of file EvtValError.cc.

                                     {
 
  assert( _valKnown );
  _val *= c;
  if ( _errKnown ) _err *= c;
}

operator+=()

void EvtValError::operator+=

(

const EvtValError &

other

)

Definition at line 79 of file EvtValError.cc.

                                                     {
  assert( _valKnown );
  assert( other._valKnown );
  _val += other._val;
 
  // add errors in quadrature
 
  if ( _errKnown && other._errKnown ) { _err = sqrt( _err * _err + other._err * other._err ); }
  else { _errKnown = 0; }
}

operator/=()

void EvtValError::operator/=

(

const EvtValError &

other

)

Definition at line 58 of file EvtValError.cc.

                                                     {
  assert( _valKnown && other._valKnown && other._val != 0. );
 
  // Relative errors add in quadrature
  if ( _errKnown && other._errKnown )
    _err = _val / other._val * sqrt( prec() * prec() + other.prec() * other.prec() );
  else _errKnown = 0;
 
  // Modify the value
  _val /= other._val;
}

operator=()

void EvtValError::operator=

(

const EvtValError &

other

)

Definition at line 39 of file EvtValError.cc.

                                                    {
  _valKnown = other._valKnown;
  _val      = other._val;
  _errKnown = other._errKnown;
  _err      = other._err;
}

prec()

double EvtValError::prec

(

)

const

Definition at line 34 of file EvtValError.cc.

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

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

print()

void EvtValError::print

(

std::ostream &

)

const

Definition at line 70 of file EvtValError.cc.

                                           {
  if ( _valKnown ) os << _val;
  else os << "Undef";
  os << " +/- ";
  if ( _errKnown ) os << _err;
  else os << "Undef";
  os << endl;
}

value()

double EvtValError::value ( ) const

inline

Definition at line 30 of file EvtValError.hh.

                              {
    assert( _valKnown );
    return _val;
  }

valueKnown()

int EvtValError::valueKnown ( ) const

inline

Definition at line 29 of file EvtValError.hh.

{ return _valKnown; }

---

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

• EvtValError.hh
• EvtValError.cc