OCCT

// Copyright (c) 2025 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include "MathUtils_GaussKronrodWeights.hxx"
#include <MathUtils_Gauss.hxx>
#include <math.hxx>

//=================================================================================================

bool MathUtils::GetKronrodPointsAndWeights(int          theNbKronrod,
                                           math_Vector& thePoints,
                                           math_Vector& theWeights)
{
  if (theNbKronrod < 1 || thePoints.Size() != static_cast<size_t>(theNbKronrod)
      || theWeights.Size() != static_cast<size_t>(theNbKronrod))
  {
    return false;
  }
  const size_t aSize = static_cast<size_t>(theNbKronrod);
  math_Vector  aPoints(aSize);
  math_Vector  aWeights(aSize);
  if (!math::KronrodPointsAndWeights(theNbKronrod, aPoints, aWeights))
  {
    return false;
  }
  for (size_t i = 0; i < aSize; ++i)
  {
    thePoints.ChangeAt(i)  = aPoints.At(i);
    theWeights.ChangeAt(i) = aWeights.At(i);
  }
  return true;
}

//=================================================================================================

bool MathUtils::GetOrderedGaussPointsAndWeights(int          theNbGauss,
                                                math_Vector& thePoints,
                                                math_Vector& theWeights)
{
  if (theNbGauss < 1 || thePoints.Size() != static_cast<size_t>(theNbGauss)
      || theWeights.Size() != static_cast<size_t>(theNbGauss))
  {
    return false;
  }
  return MathUtils::GetGaussPointsAndWeights(theNbGauss, thePoints, theWeights);
}