#include <L1MuPacking.h>

Inheritance diagram for L1MuPseudoSignedPacking:

Public Member Functions
virtual int	idxFromPacked (unsigned packed) const
	get the value from the packed notation (+/-) More...

	L1MuPseudoSignedPacking ()

	L1MuPseudoSignedPacking (unsigned int nbits)

virtual unsigned	packedFromIdx (int idx) const
	get the packed notation of a value, check range More...

virtual unsigned	packedFromIdx (int idx, int sig) const
	get the packed notation of a value, check range; sets the sign separately, 1 is neg. sign(!) More...

virtual int	signFromPacked (unsigned packed) const
	get the (pseudo-)sign from the packed notation (0=positive, 1=negative) More...

virtual	~L1MuPseudoSignedPacking ()

Public Member Functions inherited from L1MuPacking
virtual	~L1MuPacking ()

Private Member Functions
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Private Attributes
unsigned int	m_nbits

Friends
class	boost::serialization::access

template<typename CondSerializationT , typename Enabled >
struct	cond::serialization::access

Detailed Description

Packing of a signed int in a bit field (pseudo-sign)

There is a -0 and a +0 in the pseudo-signed scale

Definition at line 136 of file L1MuPacking.h.

Constructor & Destructor Documentation

L1MuPseudoSignedPacking::L1MuPseudoSignedPacking ( )

inline

Definition at line 138 of file L1MuPacking.h.

138 {}

virtual L1MuPseudoSignedPacking::~L1MuPseudoSignedPacking ( )

inlinevirtual

Definition at line 139 of file L1MuPacking.h.

139 {};

L1MuPseudoSignedPacking::L1MuPseudoSignedPacking ( unsigned int nbits )

inline

Definition at line 140 of file L1MuPacking.h.

140 : m_nbits(nbits) {};

L1MuPseudoSignedPacking::m_nbits

unsigned int m_nbits

Definition: L1MuPacking.h:175

Member Function Documentation

virtual int L1MuPseudoSignedPacking::idxFromPacked ( unsigned packed ) const

inlinevirtual

get the value from the packed notation (+/-)

Implements L1MuPacking.

Definition at line 146 of file L1MuPacking.h.

References m_nbits.

Referenced by L1MuSymmetricBinnedScale::getCenter(), and L1MuSymmetricBinnedScale::getLowEdge().

                                                    {
     unsigned mask = (1 << (m_nbits-1)) - 1; // for lower bits
     int absidx = (int) ( packed & mask );
     unsigned psmask = (1 << (m_nbits-1) );
     return absidx * ( ( (packed & psmask) == psmask ) ? -1 : 1 ); // pseudo sign==1 is negative
   };  

virtual unsigned L1MuPseudoSignedPacking::packedFromIdx ( int idx ) const

inlinevirtual

get the packed notation of a value, check range

Implements L1MuPacking.

Definition at line 153 of file L1MuPacking.h.

References funct::abs(), and m_nbits.

Referenced by L1MuSymmetricBinnedScale::getPacked().

                                                 {
     unsigned packed = std::abs(idx);
     unsigned maxabs = (1 << (m_nbits-1)) -1;
     if (packed > maxabs) edm::LogWarning("ScaleRangeViolation") 
                               << "L1MuPseudoSignedPacking::packedFromIdx: warning value " << idx 
                   << "exceeds " << m_nbits << "-bit range !!!";
     if (idx < 0) packed |= 1 << (m_nbits-1);
     return  packed;
   }

virtual unsigned L1MuPseudoSignedPacking::packedFromIdx	(	int	idx,
		int	sig
	)		const

inlinevirtual

get the packed notation of a value, check range; sets the sign separately, 1 is neg. sign(!)

Definition at line 164 of file L1MuPacking.h.

References funct::abs(), and m_nbits.

                                                          {
     unsigned packed = std::abs(idx);
     unsigned maxabs = (1 << (m_nbits-1)) -1;
     if (packed > maxabs) edm::LogWarning("ScaleRangeViolation") 
                               << "L1MuPseudoSignedPacking::packedFromIdx: warning value " << idx 
                   << "exceeds " << m_nbits << "-bit range !!!";
     if (sig==1) packed |= 1 << (m_nbits-1); // sig==1 is negative
     return  packed;
   }