SparseApproxComparisons.h

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008-2014 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// SPDX-License-Identifier: MPL-2.0
 
#ifndef EIGEN_SPARSE_APPROX_COMPARISONS_H
#define EIGEN_SPARSE_APPROX_COMPARISONS_H
 
// IWYU pragma: private
#include "./InternalHeaderCheck.h"
 
namespace Eigen {
 
template <typename Derived>
template <typename OtherDerived>
bool SparseMatrixBase<Derived>::isApprox(const SparseMatrixBase<OtherDerived>& other, const RealScalar& prec) const {
  const typename internal::nested_eval<Derived, 2, PlainObject>::type actualA(derived());
  std::conditional_t<bool(IsRowMajor) == bool(OtherDerived::IsRowMajor),
                     const typename internal::nested_eval<OtherDerived, 2, PlainObject>::type, const PlainObject>
      actualB(other.derived());
 
  return (actualA - actualB).squaredNorm() <= prec * prec * numext::mini(actualA.squaredNorm(), actualB.squaredNorm());
}
 
}  // end namespace Eigen
 
#endif  // EIGEN_SPARSE_APPROX_COMPARISONS_H