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d1a29d6319
when to evaluate arguments and when to meta-unroll. -use it in Product to determine when to eval args. not yet used to determine when to unroll. for now, not used anywhere else but that'll follow. -fix badness of my last commit
69 lines
2.8 KiB
C++
69 lines
2.8 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra. Eigen itself is part of the KDE project.
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//
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// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr>
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//
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// Eigen is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3 of the License, or (at your option) any later version.
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//
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// Alternatively, you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version.
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//
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// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License and a copy of the GNU General Public License along with
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// Eigen. If not, see <http://www.gnu.org/licenses/>.
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#ifndef EIGEN_ASSOCIATIVE_FUNCTORS_H
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#define EIGEN_ASSOCIATIVE_FUNCTORS_H
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/** \internal
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* \brief Template functor to compute the sum of two scalars
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*
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* \sa class CwiseBinaryOp, MatrixBase::operator+, class PartialRedux, MatrixBase::sum()
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*/
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template<typename Scalar> struct ei_scalar_sum_op EIGEN_EMPTY_STRUCT {
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const Scalar operator() (const Scalar& a, const Scalar& b) const { return a + b; }
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enum { Cost = NumTraits<Scalar>::AddCost };
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};
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/** \internal
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* \brief Template functor to compute the product of two scalars
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*
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* \sa class CwiseBinaryOp, MatrixBase::cwiseProduct(), class PartialRedux, MatrixBase::redux()
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*/
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template<typename Scalar> struct ei_scalar_product_op EIGEN_EMPTY_STRUCT {
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const Scalar operator() (const Scalar& a, const Scalar& b) const { return a * b; }
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enum { Cost = NumTraits<Scalar>::MulCost };
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};
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/** \internal
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* \brief Template functor to compute the min of two scalars
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*
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* \sa class CwiseBinaryOp, MatrixBase::cwiseMin, class PartialRedux, MatrixBase::minCoeff()
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*/
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template<typename Scalar> struct ei_scalar_min_op EIGEN_EMPTY_STRUCT {
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const Scalar operator() (const Scalar& a, const Scalar& b) const { return std::min(a, b); }
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enum { Cost = ConditionalJumpCost + NumTraits<Scalar>::AddCost };
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};
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/** \internal
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* \brief Template functor to compute the max of two scalars
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*
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* \sa class CwiseBinaryOp, MatrixBase::cwiseMax, class PartialRedux, MatrixBase::maxCoeff()
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*/
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template<typename Scalar> struct ei_scalar_max_op EIGEN_EMPTY_STRUCT {
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const Scalar operator() (const Scalar& a, const Scalar& b) const { return std::max(a, b); }
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enum { Cost = ConditionalJumpCost + NumTraits<Scalar>::AddCost };
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};
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#endif // EIGEN_ASSOCIATIVE_FUNCTORS_H
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