Generic hash implementation (for easy migration to the new Hash class). More...

#include </scratch/z5/marcocle/lhcb-release/419/GAUDI/GAUDI_v26r1/InstallArea/x86_64-slc6-gcc48-opt/include/GaudiKernel/Hash.h>

Inheritance diagram for GaudiUtils::GenericHash< T >:

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Collaboration diagram for GaudiUtils::GenericHash< T >:

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Public Member Functions
std::size_t	operator() (const T &key) const
	the generic hash function

std::size_t	operator() (const T &key) const
	the generic hash function

Detailed Description

template<class T>
struct GaudiUtils::GenericHash< T >

Generic hash implementation (for easy migration to the new Hash class).

Definition at line 30 of file Hash.h.

Member Function Documentation

template<class T >

std::size_t GaudiUtils::GenericHash< T >::operator() ( const T & key ) const

inline

the generic hash function

Definition at line 34 of file Hash.h.

                                                       {
      std::size_t res = 0 ;
      std::size_t len = sizeof(T) ;
      const char* p = reinterpret_cast<const char*>( &key );
      while( len-- ) { res = ( res << 1 ) ^ *p; ++p; }
      return res;
    }