LWBinUtils Class Reference

#include <LWBinUtils.h>

Collaboration diagram for LWBinUtils:

Static Public Member Functions
static unsigned	valueToBin (const double &x, const float *varBinnings, const double &invDelta, const double &xmin, const double &xmax, unsigned nbinsplus1)
static double	getBinCenter (int bin, const float *varBinnings, const double &invDelta, const double &xmin, unsigned nbinsplus1)
static unsigned	internal_bin (unsigned binx, unsigned biny, unsigned nbinsxPlus2)
static void	unpack_internal_bin (unsigned internalbin, unsigned &binx, unsigned &biny, unsigned nbinsxPlus2)

Private Member Functions
	LWBinUtils ()
	~LWBinUtils ()

Static Private Member Functions
static unsigned	valueToVarBin (const double &x, const float *varBinnings, unsigned nbinsplus1)

Detailed Description

Definition at line 30 of file LWBinUtils.h.

Constructor & Destructor Documentation

LWBinUtils()

LWBinUtils::LWBinUtils ( )

private

~LWBinUtils()

LWBinUtils::~LWBinUtils ( )

private

Member Function Documentation

getBinCenter()

double LWBinUtils::getBinCenter ( int  bin, const float *  varBinnings, const double &  invDelta, const double &  xmin, unsigned  nbinsplus1  )

inlinestatic

Definition at line 85 of file LWBinUtils.h.

{
  if (!varBinnings || bin<1 || bin>=int(nbinsplus1))
    return xmin + (bin-0.5)/invDelta;
  else
    return 0.5*(varBinnings[bin-1] + varBinnings[bin]);
}

internal_bin()

unsigned LWBinUtils::internal_bin ( unsigned  binx, unsigned  biny, unsigned  nbinsxPlus2  )

inlinestatic

Definition at line 95 of file LWBinUtils.h.

{
  //Same mapping as in ROOT (mapping is important for copyContents):
  assert(binx<nbinsxPlus2);
  return biny * (nbinsxPlus2) + binx;
}

unpack_internal_bin()

void LWBinUtils::unpack_internal_bin ( unsigned  internalbin, unsigned &  binx, unsigned &  biny, unsigned  nbinsxPlus2  )

inlinestatic

Definition at line 104 of file LWBinUtils.h.

{
  binx = internalbin % nbinsxPlus2;
  biny = (internalbin-binx) / nbinsxPlus2;
  assert(internal_bin(binx,biny,nbinsxPlus2)==internalbin);
}

valueToBin()

unsigned LWBinUtils::valueToBin ( const double &  x, const float *  varBinnings, const double &  invDelta, const double &  xmin, const double &  xmax, unsigned  nbinsplus1  )

inlinestatic

Definition at line 60 of file LWBinUtils.h.

                                          {
#ifdef LW_STRICT_ROOT_BEHAVIOUR
  //In ROOT, NaN's go in overflow bin.
  if (x!=x)
    return nbinsplus1;
#endif
#ifndef NDEBUG
  if (std::isnan(x)) {
    std::cout<<"LWHisto ERROR: Saw NaN in input axis position"<<std::endl;
    return USHRT_MAX;
  }
#endif
  assert(!(x!=x));
  if (x<xmin)
    return 0;
  if (x>xmax)
    return nbinsplus1;
  if (!varBinnings)
    return static_cast<unsigned>(LWHistBitUtils::minZero(std::min<int>(nbinsplus1,int(1+invDelta*(x-xmin)))));
  return valueToVarBin(x,varBinnings,nbinsplus1);
}

valueToVarBin()

unsigned LWBinUtils::valueToVarBin ( const double &  x, const float *  varBinnings, unsigned  nbinsplus1  )

staticprivate

Definition at line 19 of file LWBinUtils.cxx.

{
  //varBinnings has nbinsplus1 entries
  assert(!(x!=x));
  assert(varBinnings);
  assert(nbinsplus1>=2);
  if (x<varBinnings[0])
    return 0;
  if (x>varBinnings[nbinsplus1-1])
    return nbinsplus1;
  const unsigned result = std::upper_bound(varBinnings,&(varBinnings[nbinsplus1]),x)-varBinnings;
  assert(result<=nbinsplus1);
  return result;
}

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The documentation for this class was generated from the following files:

• LWBinUtils.h
• LWBinUtils.cxx