G4QuickRand.hh File Reference

#include "G4Types.hh"
#include <cstdint>

Go to the source code of this file.

Functions
G4double	G4QuickRand ()

Function Documentation

G4QuickRand()

G4double G4QuickRand ( )

inline

Definition at line 34 of file G4QuickRand.hh.

{
  static const G4double f = 1. / 4294967296.;  // 2^-32
 
  // Algorithm "xor" from p.4 of G.Marsaglia, "Xorshift RNGs"
  static G4ThreadLocal uint32_t y = 2463534242;
  uint32_t x                      = y;
  x ^= x << 13;
  x ^= x >> 17;
  x ^= x << 5;
  y = x;
  return x * f;
}

References G4ThreadLocal.

Referenced by G4VSolid::EstimateCubicVolume(), G4VSolid::EstimateSurfaceArea(), G4BooleanSolid::GetPointOnSurface(), G4Box::GetPointOnSurface(), G4CutTubs::GetPointOnSurface(), G4Sphere::GetPointOnSurface(), G4Trap::GetPointOnSurface(), G4Trd::GetPointOnSurface(), G4Tubs::GetPointOnSurface(), G4Ellipsoid::GetPointOnSurface(), G4GenericPolycone::GetPointOnSurface(), G4Polycone::GetPointOnSurface(), G4Polyhedra::GetPointOnSurface(), G4Tet::GetPointOnSurface(), and G4CSGSolid::GetRadiusInRing().