logintpack Namespace Reference

Functions
int8_t	pack8log (double x, double lmin, double lmax, uint8_t base=128)
int8_t	pack8logCeil (double x, double lmin, double lmax, uint8_t base=128)
double	unpack8log (int8_t i, double lmin, double lmax, uint8_t base=128)

Function Documentation

int8_t logintpack::pack8log	(	double	x,
		double	lmin,
		double	lmax,
		uint8_t	base = 128
	)

Definition at line 20 of file liblogintpack.h.

References newFWLiteAna::base, ConfigFiles::l, fff_deleter::log, and alignCSCRings::r.

Referenced by pat::PackedCandidate::packVtx().

    {
            if(base>128) base=128;
        float l =log(fabs(x));
        float centered = (l-lmin)/(lmax-lmin)*base;
        int8_t  r=centered;
        if(centered >= base-1) return r=base-1;
        if(centered < 0) return r=0;
        if(x<0) r=-r;
        return r;
    }

int8_t logintpack::pack8logCeil	(	double	x,
		double	lmin,
		double	lmax,
		uint8_t	base = 128
	)

Definition at line 8 of file liblogintpack.h.

References newFWLiteAna::base, ConfigFiles::l, fff_deleter::log, and alignCSCRings::r.

Referenced by pat::PackedCandidate::packVtx().

        {
                if(base>128) base=128;
                float l =log(fabs(x));
                float centered = (l-lmin)/(lmax-lmin)*base;
                int8_t  r=ceil(centered);
                if(centered >= base-1) return r=base-1;
                if(centered < 0) return r=0;
                if(x<0) r=-r;
                return r;
        }

double logintpack::unpack8log	(	int8_t	i,
		double	lmin,
		double	lmax,
		uint8_t	base = 128
	)

Definition at line 32 of file liblogintpack.h.

References funct::abs(), newFWLiteAna::base, create_public_lumi_plots::exp, and ConfigFiles::l.

Referenced by pat::PackedCandidate::unpackVtx().

    {
            if(base>128) base=128;
            float basef=base;
        float l=lmin+abs(i)/basef*(lmax-lmin);
        float val=exp(l);
        if(i<0) return -val; else return val;
    }