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G4INCLInvFInterpolationTable.cc
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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35 
36 #include "globals.hh"
37 
45 // #include <cassert>
46 #include <algorithm>
47 #include <functional>
49 
50 namespace G4INCL {
51 
52  InvFInterpolationTable::InvFInterpolationTable(IFunction1D const &f, const unsigned int nNodes) {
53 // assert(nNodes>2);
54 
55  const G4double x0 = f.getXMinimum();
56  const G4double x1 = f.getXMaximum();
57 
58  // Build the nodes
59  G4double last = f(x0);
60  InterpolationNode firstNode(last, x0, 0.);
61  nodes.push_back(firstNode);
62  G4int skippedNodes = 0;
63  for(unsigned i = 1; i < nNodes; i++) {
64  const G4double xi = x0 + i*(x1-x0)/((G4double)(nNodes-1));
65  // Make sure that the x vector is sorted (corresponding to a monotonous
66  // function)
67  const G4double value = f(xi);
68  if(value <= last) {
69  ++skippedNodes;
70  continue;
71  }
72  InterpolationNode node(value, xi, 0.);
73  nodes.push_back(node);
74  last = value;
75  }
76 
77 // assert(nNodes==nodes.size()+skippedNodes);
78 
79  // Initialise the "derivative" values
81  }
82 
83 }
Float_t x1[n_points_granero]
Definition: compare.C:5
double G4double
Definition: G4Types.hh:76
virtual G4double getXMinimum() const
Return the minimum allowed value of the independent variable.
const XML_Char int const XML_Char * value
Definition: expat.h:331
void initDerivatives()
Initialise the values of the node derivatives.
Simple interpolation table for the inverse of a IFunction1D functor.
int G4int
Definition: G4Types.hh:78
virtual G4double getXMaximum() const
Return the maximum allowed value of the independent variable.
std::vector< InterpolationNode > nodes
Interpolating nodes.
InvFInterpolationTable(IFunction1D const &f, const unsigned int nNodes=30)