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83 lines
3.3 KiB
C++
83 lines
3.3 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
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// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
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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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// This file is a base class plugin containing matrix specifics coefficient wise functions.
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/** \returns an expression of the coefficient-wise absolute value of \c *this
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*
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* Example: \include MatrixBase_cwiseAbs.cpp
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* Output: \verbinclude MatrixBase_cwiseAbs.out
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*
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* \sa cwiseAbs2()
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*/
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EIGEN_STRONG_INLINE const CwiseUnaryOp<internal::scalar_abs_op<Scalar>, const Derived>
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cwiseAbs() const { return derived(); }
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/** \returns an expression of the coefficient-wise squared absolute value of \c *this
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*
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* Example: \include MatrixBase_cwiseAbs2.cpp
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* Output: \verbinclude MatrixBase_cwiseAbs2.out
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*
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* \sa cwiseAbs()
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*/
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EIGEN_STRONG_INLINE const CwiseUnaryOp<internal::scalar_abs2_op<Scalar>, const Derived>
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cwiseAbs2() const { return derived(); }
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/** \returns an expression of the coefficient-wise square root of *this.
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*
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* Example: \include MatrixBase_cwiseSqrt.cpp
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* Output: \verbinclude MatrixBase_cwiseSqrt.out
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*
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* \sa cwisePow(), cwiseSquare()
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*/
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inline const CwiseUnaryOp<internal::scalar_sqrt_op<Scalar>, const Derived>
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cwiseSqrt() const { return derived(); }
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/** \returns an expression of the coefficient-wise inverse of *this.
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*
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* Example: \include MatrixBase_cwiseInverse.cpp
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* Output: \verbinclude MatrixBase_cwiseInverse.out
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*
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* \sa cwiseProduct()
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*/
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inline const CwiseUnaryOp<internal::scalar_inverse_op<Scalar>, const Derived>
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cwiseInverse() const { return derived(); }
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/** \returns an expression of the coefficient-wise == operator of \c *this and a scalar \a s
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*
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* \warning this performs an exact comparison, which is generally a bad idea with floating-point types.
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* In order to check for equality between two vectors or matrices with floating-point coefficients, it is
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* generally a far better idea to use a fuzzy comparison as provided by isApprox() and
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* isMuchSmallerThan().
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*
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* \sa cwiseEqual(const MatrixBase<OtherDerived> &) const
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*/
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inline const CwiseUnaryOp<std::binder1st<std::equal_to<Scalar> >, const Derived>
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cwiseEqual(const Scalar& s) const
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{
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return CwiseUnaryOp<std::binder1st<std::equal_to<Scalar> >,const Derived>
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(derived(), std::bind1st(std::equal_to<Scalar>(), s));
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}
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