L1MuSignedPacking< Bits > Class Template Reference

#include <L1MuPacking.h>

Inheritance diagram for L1MuSignedPacking< Bits >:

Public Member Functions
virtual int	idxFromPacked (unsigned packed) const
	get the value from the packed notation (+/-) More...
virtual unsigned	packedFromIdx (int idx) const
	get the packed notation of a value, check range More...
virtual int	signFromPacked (unsigned packed) const
	get the sign from the packed notation (0=positive, 1=negative) More...

Detailed Description

template<unsigned int Bits>
class L1MuSignedPacking< Bits >

Packing of a signed int in a bit field (2's complement)

Definition at line 86 of file L1MuPacking.h.

Member Function Documentation

template<unsigned int Bits>

virtual int L1MuSignedPacking< Bits >::idxFromPacked ( unsigned  packed ) const

inlinevirtual

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

Implements L1MuPacking.

Definition at line 92 of file L1MuPacking.h.

Referenced by L1MuGMTMerger::projectedPhi(), and L1MuGMTLFMatchQualLUT::TheLookupFunction().

{ return packed & (1 << (Bits-1)) ? (packed - (1 << Bits) ) : packed;};

template<unsigned int Bits>

virtual unsigned L1MuSignedPacking< Bits >::packedFromIdx ( int  idx ) const

inlinevirtual

get the packed notation of a value, check range

Implements L1MuPacking.

Definition at line 94 of file L1MuPacking.h.

References customizeTrackingMonitorSeedNumber::idx.

Referenced by L1MuGMTMatcher::lookup_mq(), L1MuDTTrack::setEta(), L1MuGMTLFCOUDeltaEtaLUT::TheLookupFunction(), L1MuGMTLFDeltaEtaLUT::TheLookupFunction(), and L1MuGMTLFPhiProLUT::TheLookupFunction().

                                                { 
    unsigned maxabs = 1 << (Bits-1) ;
    if (idx < -(int)maxabs && idx >= (int)maxabs) edm::LogWarning("ScaleRangeViolation") 
                                                       << "L1MuSignedPacking::packedFromIdx: warning value " << idx 
                               << "exceeds " << Bits << "-bit range !!!";    
    return  ~(~0 << Bits) & (idx < 0 ? (1 << Bits) + idx : idx);
  };

template<unsigned int Bits>

virtual int L1MuSignedPacking< Bits >::signFromPacked ( unsigned  packed ) const

inlinevirtual

get the sign from the packed notation (0=positive, 1=negative)

Implements L1MuPacking.

Definition at line 89 of file L1MuPacking.h.

{ return packed & (1 << (Bits-1)) ? 1 : 0;};