A class managing bits belonging to a range of bits.
static const unsigned int m_version
static const BitField< unsigned int > m_caloSamplingField
static const BitField< unsigned int > m_technologyField
static const BitField< unsigned int > m_versionField
static const BitField< unsigned int > m_validField
static const BitField< unsigned int > m_isEntryToLayerField
Ensure that the ATLAS eigen extensions are properly loaded.