LegendreWeights.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef EFLOWREC_LEGENDREWEIGHTS_H
#define EFLOWREC_LEGENDREWEIGHTS_H

constexpr double legendreWeights[21] = {
 
    0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
 
    // Weights for the 5th order Legendre polynomial
 
    0.236926885056189, 0.478628670499366, 0.568888888888889, 0.478628670499366,
    0.236926885056189,
 
    // Weights for the 6th order Legendre polynomial
 
    0.17132449237917, 0.360761573048139, 0.467913934572691, 0.467913934572691,
    0.360761573048139, 0.17132449237917
 
};

constexpr double legendreRoots[21] = {
 
    0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
 
    // Roots of the 5th order Legendre polynomial
 
    -0.906179845938664, -0.538469310105683, 0.0, 0.538469310105683, 0.906179845938664,
 
    // Roots of the 6th order Legendre polynomial
 
    -0.932469514203152, -0.661209386466265, -0.238619186083197, 0.238619186083197,
    0.661209386466265, 0.932469514203152
 
};
 
#endif /* EFLOWREC_LEGENDREWEIGHTS_H */