Photospp::PhotosDebugRandom Class Reference

#include <PhotosDebugRandom.h>

Inheritance diagram for Photospp::PhotosDebugRandom:

Static Public Member Functions
static void	saveState ()
static void	restoreState ()
static void	setState (int i, int j, double c, double list[97])
static void	setSaveState (int i, int j, double c, double list[97])
static void	print ()

Static Private Member Functions
static void	setSeed (int s1, int s2)
static void	setSeed (int s1, int s2)
static void	initialize ()
static void	initialize ()
static double	randomReal ()
static double	randomReal ()

Static Private Attributes
static int	i97_saved = 0
static int	j97_saved = 0
static double	uran_saved [97] = { 0 }
static double	cran_saved = 0
static bool	init = false
static int	iseed [2] = { 1802, 9373 }
static int	i97 = 96
static int	j97 = 32
static double	uran [97] = { 0.0 }
static double	cran = 362436.0 /16777216.0
static const double	cdran = 7654321.0 /16777216.0
static const double	cmran = 16777213.0/16777216.0

Detailed Description

Definition at line 25 of file PhotosDebugRandom.h.

Member Function Documentation

void PhotosRandom::initialize ( )

staticinherited

Definition at line 45 of file PhotosRandom.cxx.

References Photospp::Log::Debug(), i, Photospp::PhotosRandom::init, Photospp::PhotosRandom::iseed, T, and Photospp::PhotosRandom::uran.

Referenced by Photospp::Photos::initialize().

{
        long IS1,IS2,IS3,IS4,IS5;
        double S,T;

// Calculate Marsaglia and Zaman seeds (by F. James)
        IS1=(iseed[0]/177)%177+2;
        IS2= iseed[0]%177+2;
        IS3=(iseed[1]/169)%178+1;
        IS4= iseed[1]%169;
        for(int i=0;i<97;i++)
        {
                S=0.0;
                T=0.5;
                for(int j=0;j<24;j++)
                {
                        IS5=( ((IS1*IS2)%179)*IS3 )%179;
                        IS1=IS2;
                        IS2=IS3;
                        IS3=IS5;
                        IS4=(53*IS4+1)%169;
                        if( (IS4*IS5)%64>=32) S=S+T;
                        T=0.5*T;
                }
                uran[i]=S;
        }
        init=true;
        Log::Debug(0)<<"PhotosRandom::inititalize(): seed: "<<iseed[0]<<", "<<iseed[1]<<std::endl;
}

static void Photospp::PhotosRandom::initialize ( )

staticinherited

void PhotosDebugRandom::print ( )

static

Definition at line 48 of file PhotosDebugRandom.cxx.

References Photospp::PhotosRandom::cran, i, Photospp::PhotosRandom::i97, Photospp::Log::Info(), Photospp::PhotosRandom::j97, Photospp::Log::RedirectOutput(), Photospp::Log::RevertOutput(), and Photospp::PhotosRandom::uran.

{
  int                coutPrec = cout.precision(18);
        ios_base::fmtflags flags    = cout.setf(ios_base::floatfield);

  Log::RedirectOutput(Log::Info());

  cout<<"double uran_state[97] = { ";
  for(int i=0;i<96;i++) cout<<uran[i]<<", ";
  cout<<uran[96]<<" };"<<endl<<endl;
  cout<<"PhotosDebugRandom::setState( "<<i97<<", "<<j97<<", "<<cran<<", uran_state );"<<endl;

  Log::RevertOutput();

        // Revert output stream flags and precision
        cout.precision(coutPrec);
        cout.flags    (flags);
}

static double Photospp::PhotosRandom::randomReal ( )

staticinherited

double PhotosRandom::randomReal ( )

staticinherited

Definition at line 91 of file PhotosRandom.cxx.

References Photospp::PhotosRandom::cdran, Photospp::PhotosRandom::cmran, Photospp::PhotosRandom::cran, Photospp::Log::Fatal(), Photospp::PhotosRandom::i97, Photospp::PhotosRandom::init, Photospp::PhotosRandom::j97, and Photospp::PhotosRandom::uran.

Referenced by Photospp::Photos::setRandomGenerator().

{
        if(!init) Log::Fatal("PhotosRandom::randomReal(): generator not initialized",1);
        double ret=0.0;
        while(true)
        {
                ret = uran[i97]-uran[j97];
                if(ret<0.0) ret+=1.;
                uran[i97]=ret;
                i97--;
                if(i97<0) i97=96;
                j97--;
                if(j97<0) j97=96;
                cran-=cdran;
                if(cran<0.0) cran+=cmran;
                ret-=cran;
                if(ret<0.0) ret+=1.0;
                if(ret>0.0) break;
        }
        return ret;
}

void PhotosDebugRandom::restoreState ( )

static

Definition at line 23 of file PhotosDebugRandom.cxx.

References Photospp::PhotosRandom::cran, cran_saved, i, Photospp::PhotosRandom::i97, i97_saved, Photospp::PhotosRandom::j97, j97_saved, Photospp::PhotosRandom::uran, and uran_saved.

{
  i97=i97_saved;
        j97=j97_saved;
  cran=cran_saved;

        for(int i=0;i<97;i++) uran[i]=uran_saved[i];
}

void PhotosDebugRandom::saveState ( )

static

Definition at line 14 of file PhotosDebugRandom.cxx.

References Photospp::PhotosRandom::cran, cran_saved, i, Photospp::PhotosRandom::i97, i97_saved, Photospp::PhotosRandom::j97, j97_saved, Photospp::PhotosRandom::uran, and uran_saved.

{
  i97_saved=i97;
        j97_saved=j97;
  cran_saved=cran;

        for(int i=0;i<97;i++) uran_saved[i]=uran[i];
}

void PhotosDebugRandom::setSaveState ( int  i, int  j, double  c, double  list[97]  )

static

Definition at line 40 of file PhotosDebugRandom.cxx.

References c, cran_saved, i, i97_saved, j97_saved, and uran_saved.

{
  i97_saved=i;
  j97_saved=j;
  cran_saved=c;
  for(int i=0;i<97;i++) uran_saved[i]=list[i];
}

static void Photospp::PhotosRandom::setSeed ( int  s1, int  s2  )

staticinherited

void PhotosRandom::setSeed ( int  s1, int  s2  )

staticinherited

Definition at line 25 of file PhotosRandom.cxx.

References Photospp::Log::Fatal(), and Photospp::PhotosRandom::iseed.

Referenced by Photospp::Photos::setSeed().

{
        if(s1<0 || s1>31327) Log::Fatal("PhotosRandom::setSeed(): Seed(1) out of range [0,31327]",8);
        if(s2<0 || s2>30080) Log::Fatal("PhotosRandom::setSeed(): Seed(2) out of range [0,30080]",9);
        iseed[0]=s1;
        iseed[1]=s2;
}

void PhotosDebugRandom::setState ( int  i, int  j, double  c, double  list[97]  )

static

Definition at line 32 of file PhotosDebugRandom.cxx.

References c, Photospp::PhotosRandom::cran, i, Photospp::PhotosRandom::i97, Photospp::PhotosRandom::j97, and Photospp::PhotosRandom::uran.

{
  i97=i;
  j97=j;
  cran=c;
  for(int i=0;i<97;i++) uran[i]=list[i];
}

Member Data Documentation

static const double PhotosRandom::cdran = 7654321.0 /16777216.0

staticprotectedinherited

Definition at line 41 of file PhotosRandom.h.

Referenced by Photospp::PhotosRandom::randomReal().

static const double PhotosRandom::cmran = 16777213.0/16777216.0

staticprotectedinherited

Definition at line 42 of file PhotosRandom.h.

Referenced by Photospp::PhotosRandom::randomReal().

static double PhotosRandom::cran = 362436.0 /16777216.0

staticprotectedinherited

Definition at line 40 of file PhotosRandom.h.

Referenced by print(), Photospp::PhotosRandom::randomReal(), restoreState(), saveState(), and setState().

double PhotosDebugRandom::cran_saved = 0

staticprivate

Definition at line 47 of file PhotosDebugRandom.h.

Referenced by restoreState(), saveState(), and setSaveState().

static int PhotosRandom::i97 = 96

staticprotectedinherited

Definition at line 37 of file PhotosRandom.h.

Referenced by print(), Photospp::PhotosRandom::randomReal(), restoreState(), saveState(), and setState().

int PhotosDebugRandom::i97_saved = 0

staticprivate

Definition at line 44 of file PhotosDebugRandom.h.

Referenced by restoreState(), saveState(), and setSaveState().

static bool PhotosRandom::init = false

staticprotectedinherited

Definition at line 35 of file PhotosRandom.h.

Referenced by Photospp::PhotosRandom::initialize(), and Photospp::PhotosRandom::randomReal().

static int PhotosRandom::iseed = { 1802, 9373 }

staticprotectedinherited

Definition at line 36 of file PhotosRandom.h.

Referenced by Photospp::PhotosRandom::initialize(), and Photospp::PhotosRandom::setSeed().

static int PhotosRandom::j97 = 32

staticprotectedinherited

Definition at line 38 of file PhotosRandom.h.

Referenced by print(), Photospp::PhotosRandom::randomReal(), restoreState(), saveState(), and setState().

int PhotosDebugRandom::j97_saved = 0

staticprivate

Definition at line 45 of file PhotosDebugRandom.h.

Referenced by restoreState(), saveState(), and setSaveState().

static double PhotosRandom::uran = { 0.0 }

staticprotectedinherited

Definition at line 39 of file PhotosRandom.h.

Referenced by Photospp::PhotosRandom::initialize(), print(), Photospp::PhotosRandom::randomReal(), restoreState(), saveState(), and setState().

double PhotosDebugRandom::uran_saved = { 0 }

staticprivate

Definition at line 46 of file PhotosDebugRandom.h.

Referenced by restoreState(), saveState(), and setSaveState().

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

• PhotosDebugRandom.h
• PhotosDebugRandom.cxx