ComPackSignedExpFloat Class Reference

#include <ComPackSignedExpFloat.h>

Inheritance diagram for ComPackSignedExpFloat:

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
Public Member Functions inherited from ComPackBase< double >
	ComPackBase ()
	ComPackBase (double minval, double maxval, d_ULong bitrange)
	ComPackBase (const ComPackBase &)
virtual	~ComPackBase ()
virtual StatusCode	pack (const double, d_ULong &) const=0
virtual StatusCode	unpack (const d_ULong, double &) 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
ComPackBase &	operator= (const ComPackBase &)

Additional Inherited Members
Public Types inherited from ComPackBaseBase
enum	StatusCode {   TAG_OK , TAG_BAD , TAG_RANGE_ERROR , TAG_VAL_ROUND_DOWN ,   TAG_VAL_ROUND_UP }
Protected Types inherited from ComPackBase< double >
enum
Protected Attributes inherited from ComPackBase< double >
double	_minVal
double	_maxVal
double	_valRange
d_ULong	_bitRange
d_ULong	_bitMask

Detailed Description

Definition at line 29 of file ComPackSignedExpFloat.h.

Constructor & Destructor Documentation

ComPackSignedExpFloat()

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::~ComPackSignedExpFloat ( )

virtual

Definition at line 43 of file ComPackSignedExpFloat.cxx.

{;}

Member Function Documentation

pack()

ComPackBase< double >::StatusCode ComPackSignedExpFloat::pack ( const double  value, d_ULong &  packdata  ) const

virtual

Definition at line 47 of file ComPackSignedExpFloat.cxx.

                                                                         {
// 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;
}

print()

void ComPackSignedExpFloat::print

(

std::ostream &

s = std::cout

)

const

Definition at line 72 of file ComPackSignedExpFloat.cxx.

                                              {
  os << "Signed exponential packer using exponential packer as follows:"<<endl;
  _packer.print(os);
}

unpack()

ComPackBase< double >::StatusCode ComPackSignedExpFloat::unpack ( const d_ULong  packdata, double &  value  ) const

virtual

Implements ComPackBase< double >.

Definition at line 61 of file ComPackSignedExpFloat.cxx.

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

• ComPackSignedExpFloat.h
• ComPackSignedExpFloat.cxx