Geant4EventSeed.h File Reference

#include <DDG4/Geant4RunAction.h>

Go to the source code of this file.

Classes
class	dd4hep::sim::Geant4EventSeed
	Plugin class to set the event seed for each event. More...

Namespaces
	dd4hep
	Namespace for the AIDA detector description toolkit.
	dd4hep::sim
	Namespace for the Geant4 based simulation part of the AIDA detector description toolkit.
	EventSeed
	Set the event seed for each event.

Macros
#define	hashsize(n)   ( 1U << (n) )
#define	hashmask(n)   ( hashsize ( n ) - 1 )
#define	mix(a, b, c)

Functions
unsigned	dd4hep::sim::jenkins_hash (unsigned char *k, unsigned length, unsigned initval)
unsigned int	dd4hep::sim::hash (unsigned int initialSeed, unsigned int eventNumber, unsigned int runNumber)
	calculate hash from initialSeed, eventID and runID More...

Macro Definition Documentation

hashmask

#define hashmask

(

n

)

( hashsize ( n ) - 1 )

Definition at line 75 of file Geant4EventSeed.h.

hashsize

#define hashsize

(

n

)

( 1U << (n) )

Definition at line 74 of file Geant4EventSeed.h.

mix

#define mix	(		a,
			b,
			c
	)

Value:

    {                                           \
      a -= b; a -= c; a ^= (c>>13);             \
      b -= c; b -= a; b ^= (a<<8);              \
      c -= a; c -= b; c ^= (b>>13);             \
      a -= b; a -= c; a ^= (c>>12);             \
      b -= c; b -= a; b ^= (a<<16);             \
      c -= a; c -= b; c ^= (b>>5);              \
      a -= b; a -= c; a ^= (c>>3);              \
      b -= c; b -= a; b ^= (a<<10);             \
      c -= a; c -= b; c ^= (b>>15);             \
    }

Definition at line 104 of file Geant4EventSeed.h.