#include <L1MuPacking.h>

Inheritance diagram for L1MuPseudoSignedPacking:

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

	L1MuPseudoSignedPacking ()

	L1MuPseudoSignedPacking (unsigned int nbits)

unsigned	packedFromIdx (int idx) const override
	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...

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

	~L1MuPseudoSignedPacking () override

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 140 of file L1MuPacking.h.

Constructor & Destructor Documentation

L1MuPseudoSignedPacking::L1MuPseudoSignedPacking ( )

inline

Definition at line 142 of file L1MuPacking.h.

142 {}

L1MuPseudoSignedPacking::~L1MuPseudoSignedPacking ( )

inlineoverride

Definition at line 143 of file L1MuPacking.h.

143 {};

L1MuPseudoSignedPacking::L1MuPseudoSignedPacking ( unsigned int nbits )

inline

Definition at line 144 of file L1MuPacking.h.

144 : m_nbits(nbits){};

L1MuPseudoSignedPacking::m_nbits

unsigned int m_nbits

Definition: L1MuPacking.h:181

Member Function Documentation

int L1MuPseudoSignedPacking::idxFromPacked ( unsigned packed ) const

inlineoverridevirtual

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

Implements L1MuPacking.

Definition at line 150 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
   };

unsigned L1MuPseudoSignedPacking::packedFromIdx ( int idx ) const

inlineoverridevirtual

get the packed notation of a value, check range

Implements L1MuPacking.

Definition at line 157 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 169 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;
   }