SNAP Library , Developer Reference  2013-01-07 14:03:36
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Static Public Member Functions | Static Public Attributes
TMath Class Reference

#include <xmath.h>

List of all members.

Static Public Member Functions

static double Inv (const double &x)
static double Sqr (const double &x)
static double Sqrt (const double &x)
static double Log (const double &Val)
static double Log2 (const double &Val)
static double Round (const double &Val)
static double Round (const double &Val, int Decs)
static int Fac (const int &Val)
static int Choose (const int &N, const int &K)
static uint Pow2 (const int &pow)
static double Power (const double &Base, const double &Exponent)
template<typename T >
static int Sign (const T &Val)
template<class T >
static const T & Mx (const T &LVal, const T &RVal)
template<class T >
static const T & Mn (const T &LVal, const T &RVal)
template<class T >
static const T & Mx (const T &Val1, const T &Val2, const T &Val3)
template<class T >
static const T & Mn (const T &Val1, const T &Val2, const T &Val3)
template<class T >
static const T & Median (const T &Val1, const T &Val2, const T &Val3)
template<class T >
static const T & InRange (const T &Val, const T &Mn, const T &Mx)
template<class T >
static bool IsInRange (const T &Val, const T &Mn, const T &Mx)
template<class T >
static bool IsInEps (const T &Val, const T &Eps)

Static Public Attributes

static double E = 2.71828182845904523536
static double Pi = 3.14159265358979323846
static double LogOf2 = log(double(2))

Detailed Description

Definition at line 5 of file xmath.h.

Member Function Documentation

static int TMath::Choose ( const int &  N,
const int &  K 
) [inline, static]

Definition at line 22 of file xmath.h.

References Fac().

                                               { // binomial coefficient
    return Fac(N)/(Fac(K)*Fac(N-K)); }

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static int TMath::Fac ( const int &  Val) [inline, static]

Definition at line 20 of file xmath.h.

Referenced by Choose().

                                {
    if (Val<=1){return 1;} else {return Val*Fac(Val-1);}}

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template<class T >
static const T& TMath::InRange ( const T &  Val,
const T &  Mn,
const T &  Mx 
) [inline, static]

Definition at line 75 of file xmath.h.

References IAssert.

                                                                  {
    IAssert(Mn <= Mx); return Val < Mn ? Mn : (Val > Mx ? Mx : Val);}
static double TMath::Inv ( const double &  x) [inline, static]

Definition at line 11 of file xmath.h.

References IAssert.

{IAssert(x!=0.0); return (1.0/x);}
template<class T >
static bool TMath::IsInEps ( const T &  Val,
const T &  Eps 
) [inline, static]

Definition at line 83 of file xmath.h.

Referenced by TKronMomentsFit::EstABC().

                                                  {
    return Val >= -Eps && Val <= Eps;}

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template<class T >
static bool TMath::IsInRange ( const T &  Val,
const T &  Mn,
const T &  Mx 
) [inline, static]

Definition at line 79 of file xmath.h.

References IAssert, and Mx().

                                                                {
    IAssert(Mn <= Mx); return Val >= Mn && Val <= Mx;}

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static double TMath::Log ( const double &  Val) [inline, static]

Definition at line 14 of file xmath.h.

{return log(Val);}
static double TMath::Log2 ( const double &  Val) [inline, static]

Definition at line 15 of file xmath.h.

References LogOf2.

Referenced by TGraphAnf< PGraph >::InitAnfBits().

{return log(Val)/LogOf2;}

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template<class T >
static const T& TMath::Median ( const T &  Val1,
const T &  Val2,
const T &  Val3 
) [inline, static]

Definition at line 62 of file xmath.h.

                                                                      {
    if (Val1 < Val2) {
      if (Val2 < Val3) return Val2;
      else if (Val3 < Val1) return Val1;
      else return Val3;
    } else {
      if (Val1 < Val3) return Val1;
      else if (Val3 < Val2)  return Val2;
      else return Val3;
    }
  }
template<class T >
static const T& TMath::Mn ( const T &  LVal,
const T &  RVal 
) [inline, static]

Definition at line 36 of file xmath.h.

Referenced by TGnuPlot::AddPwrFit1(), TGnuPlot::AddPwrFit2(), TGnuPlot::AddPwrFit3(), TArtPointVisitor::BackEdge(), TBiConVisitor::BackEdge(), TLocClustStat::BagOfWhiskers(), TForestFire::BurnGeoFire(), TUndirFFire::BurnGeoFire(), TKroneckerLL::ChainGelmapRubinPlot(), TLocClust::DrawWhiskers(), TArtPointVisitor::FinishNode(), TBiConVisitor::FinishNode(), TArtPointVisitor::FwdEdge(), TSubGraphsEnum::Gen2Graphs(), TSnap::GenConfModel(), TTimeNENet::Get1stEdgeNet(), TNetInfBs::GetBestEdge(), TSnap::GetBetweennessCentr(), TSnap::GetBfsEffDiam(), TSnap::GetCmnNbrs(), TSnap::GetCmnNbrs< PUNGraph >(), TSnap::GetEdgeBridges(), TUNGraph::GetEI(), TSnap::GetInvParticipRat(), GetMinMax(), TNodeEdgeNet< TNodeData, TEdgeData >::GetUniqEdges(), TNcpGraphsBase::Impose(), TTimeNet::LoadBipartite(), TTimeNENet::LoadEdgeTm(), TSnap::TSnapDetail::TCNMQMatrix::MergeBestQ(), PlotAutoCorrelation(), TSnap::PlotShortPathDistr(), and TGStat::TakeSpectral().

                                                  {
    return LVal < RVal ? LVal : RVal;}

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template<class T >
static const T& TMath::Mn ( const T &  Val1,
const T &  Val2,
const T &  Val3 
) [inline, static]

Definition at line 51 of file xmath.h.

                                                                  {
    if(Val1 < Val2) {
      if (Val1 < Val3) return Val1;
      else return Val3;
    } else {
      if (Val2 < Val3) return Val2;
      else return Val3;
    }
  }
template<class T >
static const T& TMath::Mx ( const T &  LVal,
const T &  RVal 
) [inline, static]

Definition at line 32 of file xmath.h.

Referenced by TNEGraph::AddEdge(), TNodeEdgeNet< TNodeData, TEdgeData >::AddEdge(), TBigNet< TNodeData, IsDir >::AddNode(), TNodeNet< TNodeData >::AddNode(), TUNGraph::AddNode(), TNGraph::AddNode(), TNodeEDatNet< TNodeData, TEdgeData >::AddNode(), TNEGraph::AddNode(), TBPGraph::AddNode(), TNodeEdgeNet< TNodeData, TEdgeData >::AddNode(), TBigNet< TNodeData, IsDir >::AddUndirNode(), TBreathFS< PGraph >::DoBfs(), TSubGraphsEnum::Gen2Graphs(), TTimeNENet::Get1stEdgeNet(), TSnap::GetBetweennessCentr(), TSnap::GetEdgeBridges(), TUNGraph::GetEI(), GetMinMax(), TSnap::GetSubTreeSz(), TNodeEdgeNet< TNodeData, TEdgeData >::GetUniqEdges(), IsInRange(), TStatTest::KsTest(), TTimeNENet::LoadEdgeTm(), TSnap::TSnapDetail::TCNMQMatrix::MergeBestQ(), TBigNet< TNodeData, IsDir >::Reserve(), TLocClustStat::SaveTxtInfo(), TSparseRowMatrix::TSparseRowMatrix(), and TNIBs::UpdateDiff().

                                                   {
    return LVal > RVal ? LVal : RVal;}

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template<class T >
static const T& TMath::Mx ( const T &  Val1,
const T &  Val2,
const T &  Val3 
) [inline, static]

Definition at line 40 of file xmath.h.

                                                                  {
    if (Val1 > Val2) {
      if (Val1 > Val3) return Val1;
      else return Val3;
    } else {
      if (Val2 > Val3) return Val2;
      else return Val3;
    }
  }
static uint TMath::Pow2 ( const int &  pow) [inline, static]

Definition at line 24 of file xmath.h.

Referenced by TGraphEnumUtils::GraphId().

{return uint(1u<<pow);}

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static double TMath::Power ( const double &  Base,
const double &  Exponent 
) [inline, static]

Definition at line 25 of file xmath.h.

Referenced by TSnap::GenBaraHierar(), TKroneckerLL::GetFullGraphLL(), and TNIBs::UpdateDiff().

                                                                 {
    return exp(log(Base)*Exponent);}

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static double TMath::Round ( const double &  Val) [inline, static]

Definition at line 16 of file xmath.h.

Referenced by TLocClustStat::BestWhiskEdges(), TSpecFunc::EntropyBias(), TSnap::GenBaraHierar(), TSnap::GenRndPowerLaw(), TNcpGraphsBase::PlotAvgNcp(), TLocClustStat::PlotBoltzmanCurve(), TLocClustStat::PlotNCPScatter(), TLocClustStat::PlotPhiDistr(), TLocClustStat::PlotPhiInOut(), TAGM::RndConnectInsideCommunity(), Round(), TKronMaxLL::RoundTheta(), TLocClustStat::Run(), TGraphKey::TakeSig(), and TGraphKey::TGraphKey().

                                        {
    return (Val>0)?floor(Val+0.5):ceil(Val-0.5);}

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static double TMath::Round ( const double &  Val,
int  Decs 
) [inline, static]

Definition at line 18 of file xmath.h.

References Round().

                                                   {
    const double pwr=pow(10.0, Decs); return Round(Val * pwr) / pwr;}

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template<typename T >
static int TMath::Sign ( const T &  Val) [inline, static]

Definition at line 29 of file xmath.h.

{return Val<0?-1:(Val>0?1:0);}
static double TMath::Sqr ( const double &  x) [inline, static]

Definition at line 12 of file xmath.h.

Referenced by TNetConstraint< PGraph >::AddConstraint(), TKroneckerLL::CalcChainR2(), TMom::Def(), TLinAlg::EuclDist2(), TSnap::GenGeoPrefAttach(), TKroneckerLL::GetApxEmptyGraphDLL(), TKroneckerLL::GetApxEmptyGraphLL(), TExpBi::GetBiFuncVal(), TLocClustStat::TCutInfo::GetExpEdgesIn(), TSnap::TSnapDetail::GetSphereDev(), TSnap::TSnapDetail::TCNMQMatrix::Init(), TSpecFunc::LinearFit(), TLinAlg::Norm2(), TLinReg::NR_lfit(), TSvd::NR_pythag(), PlotAutoCorrelation(), TKroneckerLL::TestBicCriterion(), TSigmoid::TSigmoid(), and TStatTest::TTest().

{return x*x;}

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static double TMath::Sqrt ( const double &  x) [inline, static]

Definition at line 13 of file xmath.h.

References IAssert.

{IAssert(!(x<0.0)); return sqrt(x);}

Member Data Documentation

double TMath::E = 2.71828182845904523536 [static]

Definition at line 7 of file xmath.h.

Referenced by TExpBi::TExpBi().

double TMath::LogOf2 = log(double(2)) [static]

Definition at line 9 of file xmath.h.

Referenced by TSpecFunc::Entropy(), and Log2().

double TMath::Pi = 3.14159265358979323846 [static]

Definition at line 8 of file xmath.h.

Referenced by TSnap::GenGeoPrefAttach(), TRnd::GetBinomialDev(), TRnd::GetPoissonDev(), and TExpBi::TExpBi().

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