_MAX_EXPONENT=(1<<QSTEP_EXPONENT_BITS)-1;
int CQuantizerStd::QSTEP_MAX_MANTISSA=(1<<QSTEP_MANTISSA_BITS)-1;

const double lpSysWFilter_INT53[3]={1.0,0.5,0.0};
const double hpSysWFilter_INT53[3]={0.75,-0.25,-0.125};
const double lpSysWFilter_FLOAT97[5]={1.115087052456994,0.5912717631142470,-0.05754352622849957,-0.09127176311424948,0};
const double hpSysWFilter_FLOAT97[5]={0.6029490182363579,-0.2668641184428723,-0.07822326652898785,0.01686411844287495,0.02674875741080976};
const int nLenINT53HalfSysWFilter=2;
const int nLenFLOAT97HalfSysWFilter=4;

CQuantizerStd::CQuantizerStd()
{
	m_pImgBlkWTData=0;

}

CQuantizerStd::~CQuantizerStd()
{

}

CQuantizerStd::CQuantizerStd(CImgBlkWTData &ImgBlkWTData, CEncoderSpec &En