ComPackSignedExpFloat Class Reference

#include <ComPackSignedExpFloat.h>

Inheritance diagram for ComPackSignedExpFloat:

List of all members.

Public Types
	TAG_OK
	TAG_BAD
	TAG_RANGE_ERROR
	TAG_VAL_ROUND_DOWN
	TAG_VAL_ROUND_UP
enum	StatusCode {   TAG_OK, TAG_BAD, TAG_RANGE_ERROR, TAG_VAL_ROUND_DOWN,   TAG_VAL_ROUND_UP }
Public Member Functions
	ComPackSignedExpFloat (unsigned nbits, unsigned maxexponent, double maxval, bool invert=false, bool center=false)
virtual	~ComPackSignedExpFloat ()
virtual StatusCode	pack (const double, d_ULong &) const
virtual StatusCode	unpack (const d_ULong, double &) const
void	print (std::ostream &s=std::cout) const
virtual StatusCode	pack (const double, d_ULong &) const =0
virtual const double &	getMinVal () const
virtual const double &	getMaxVal () const
virtual const double &	getRange () const
d_ULong	bitRange () const
d_ULong	bitMask () const
Protected Attributes
double	_minVal
double	_maxVal
double	_valRange
d_ULong	_bitRange
d_ULong	_bitMask
Private Attributes
ComPackExpFloat	_packer
unsigned	_signbit
unsigned	_signmask

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Detailed Description

Definition at line 29 of file ComPackSignedExpFloat.h.

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Member Enumeration Documentation

enum ComPackBaseBase::StatusCode [inherited]

Enumerator:

TAG_OK
TAG_BAD
TAG_RANGE_ERROR
TAG_VAL_ROUND_DOWN
TAG_VAL_ROUND_UP

Definition at line 35 of file ComPackBaseBase.h.

                  {
    TAG_OK, TAG_BAD, TAG_RANGE_ERROR, TAG_VAL_ROUND_DOWN, TAG_VAL_ROUND_UP 
  };

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Constructor & Destructor Documentation

ComPackSignedExpFloat::ComPackSignedExpFloat	(	unsigned	nbits,
		unsigned	maxexponent,
		double	maxval,
		bool	invert = false,
		bool	center = false
	)

Definition at line 30 of file ComPackSignedExpFloat.cxx.

                                                          :
  ComPackBase<double>(-maxval,maxval,nbits),
  _packer(nbits-1,maxexponent,invert?maxval:0.0,
          invert?0.0:maxval, center),
  _signbit(1<<nbits-1),_signmask(~(1<<nbits-1))
{
  assert(maxval>0.0);
}

ComPackSignedExpFloat::~ComPackSignedExpFloat

(

)

[virtual]

Definition at line 43 of file ComPackSignedExpFloat.cxx.

{;}

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Member Function Documentation

d_ULong ComPackBase< double >::bitMask

(

)

const [inline, inherited]

Definition at line 75 of file ComPackBase.h.

References ComPackBase< T >::_bitMask.

{ return _bitMask; }

d_ULong ComPackBase< double >::bitRange

(

)

const [inline, inherited]

Definition at line 74 of file ComPackBase.h.

References ComPackBase< T >::_bitRange.

{ return _bitRange; }

virtual const double & ComPackBase< double >::getMaxVal

(

)

const [inline, virtual, inherited]

Definition at line 71 of file ComPackBase.h.

References ComPackBase< T >::_maxVal.

{ return _maxVal;};

virtual const double & ComPackBase< double >::getMinVal

(

)

const [inline, virtual, inherited]

Definition at line 70 of file ComPackBase.h.

References ComPackBase< T >::_minVal.

{ return _minVal;};

virtual const double & ComPackBase< double >::getRange

(

)

const [inline, virtual, inherited]

Definition at line 72 of file ComPackBase.h.

References ComPackBase< T >::_valRange.

{ return _valRange;};

virtual StatusCode ComPackBase< double >::pack	(	const	T,
		d_ULong &
	)			const [pure virtual, inherited]

ComPackBase< double >::StatusCode ComPackSignedExpFloat::pack	(	const	double,
		d_ULong &
	)			const [virtual]

Definition at line 47 of file ComPackSignedExpFloat.cxx.

References _packer, _signbit, _signmask, ComPackExpFloat::pack(), and ComPackBaseBase::TAG_BAD.

                                                                         {
// first, pack the absolute value
  ComPackBase<double>::StatusCode retval =
    _packer.pack(fabs(value),packdata);
  if(retval != TAG_BAD){
    if(value>0)
      packdata &= _signmask;
    else
      packdata |= _signbit;
  }
  return retval;
}

void ComPackSignedExpFloat::print

(

std::ostream &

s = std::cout

)

const

ComPackBase< double >::StatusCode ComPackSignedExpFloat::unpack	(	const	d_ULong,
		double &
	)			const [virtual]

Implements ComPackBase< double >.

Definition at line 61 of file ComPackSignedExpFloat.cxx.

References _packer, _signbit, and ComPackExpFloat::unpack().

                                                                           {
  ComPackBase<double>::StatusCode retval =
    _packer.unpack(packdata,value);
  if (value < 0)
    value = 0;
  else if(packdata&_signbit)
    value *= -1.0;
  return retval;
}

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Member Data Documentation

d_ULong ComPackBase< double >::_bitMask [protected, inherited]

Definition at line 88 of file ComPackBase.h.

Referenced by ComPackFlatFloat::ComPackFlatFloat(), ComPackFlatFloat::pack(), and ComPackFlatFloat::unpack().

d_ULong ComPackBase< double >::_bitRange [protected, inherited]

Definition at line 87 of file ComPackBase.h.

Referenced by ComPackExpFloat::ComPackExpFloat(), and ComPackFlatFloat::ComPackFlatFloat().

double ComPackBase< double >::_maxVal [protected, inherited]

Definition at line 85 of file ComPackBase.h.

Referenced by ComPackExpFloat::ComPackExpFloat(), ComPackFlatFloat::ComPackFlatFloat(), and ComPackFlatFloat::testMe().

double ComPackBase< double >::_minVal [protected, inherited]

Definition at line 84 of file ComPackBase.h.

Referenced by ComPackExpFloat::ComPackExpFloat(), ComPackFlatFloat::ComPackFlatFloat(), ComPackFlatFloat::pack(), ComPackExpFloat::pack(), ComPackFlatFloat::testMe(), and ComPackFlatFloat::unpack().

ComPackExpFloat ComPackSignedExpFloat::_packer [private]

Definition at line 47 of file ComPackSignedExpFloat.h.

Referenced by pack(), and unpack().

unsigned ComPackSignedExpFloat::_signbit [private]

Definition at line 48 of file ComPackSignedExpFloat.h.

Referenced by pack(), and unpack().

unsigned ComPackSignedExpFloat::_signmask [private]

Definition at line 49 of file ComPackSignedExpFloat.h.

Referenced by pack().

double ComPackBase< double >::_valRange [protected, inherited]

Definition at line 86 of file ComPackBase.h.

Referenced by ComPackExpFloat::ComPackExpFloat(), ComPackFlatFloat::ComPackFlatFloat(), and ComPackFlatFloat::testMe().

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