LCOV - code coverage report
Current view: top level - Core - CwiseUnaryOp.h (source / functions) Hit Total Coverage
Test: coverage.info.cleaned Lines: 6 6 100.0 %
Date: 1980-01-01 00:00:00 Functions: 35 35 100.0 %
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : // This file is part of Eigen, a lightweight C++ template library
       2                 :            : // for linear algebra.
       3                 :            : //
       4                 :            : // Copyright (C) 2008-2014 Gael Guennebaud <gael.guennebaud@inria.fr>
       5                 :            : // Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
       6                 :            : //
       7                 :            : // This Source Code Form is subject to the terms of the Mozilla
       8                 :            : // Public License v. 2.0. If a copy of the MPL was not distributed
       9                 :            : // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
      10                 :            : 
      11                 :            : #ifndef EIGEN_CWISE_UNARY_OP_H
      12                 :            : #define EIGEN_CWISE_UNARY_OP_H
      13                 :            : 
      14                 :            : namespace Eigen {
      15                 :            : 
      16                 :            : namespace internal {
      17                 :            : template<typename UnaryOp, typename XprType>
      18                 :            : struct traits<CwiseUnaryOp<UnaryOp, XprType> >
      19                 :            :  : traits<XprType>
      20                 :            : {
      21                 :            :   typedef typename result_of<
      22                 :            :                      UnaryOp(const typename XprType::Scalar&)
      23                 :            :                    >::type Scalar;
      24                 :            :   typedef typename XprType::Nested XprTypeNested;
      25                 :            :   typedef typename remove_reference<XprTypeNested>::type _XprTypeNested;
      26                 :            :   enum {
      27                 :            :     Flags = _XprTypeNested::Flags & RowMajorBit
      28                 :            :   };
      29                 :            : };
      30                 :            : }
      31                 :            : 
      32                 :            : template<typename UnaryOp, typename XprType, typename StorageKind>
      33                 :            : class CwiseUnaryOpImpl;
      34                 :            : 
      35                 :            : /** \class CwiseUnaryOp
      36                 :            :   * \ingroup Core_Module
      37                 :            :   *
      38                 :            :   * \brief Generic expression where a coefficient-wise unary operator is applied to an expression
      39                 :            :   *
      40                 :            :   * \tparam UnaryOp template functor implementing the operator
      41                 :            :   * \tparam XprType the type of the expression to which we are applying the unary operator
      42                 :            :   *
      43                 :            :   * This class represents an expression where a unary operator is applied to an expression.
      44                 :            :   * It is the return type of all operations taking exactly 1 input expression, regardless of the
      45                 :            :   * presence of other inputs such as scalars. For example, the operator* in the expression 3*matrix
      46                 :            :   * is considered unary, because only the right-hand side is an expression, and its
      47                 :            :   * return type is a specialization of CwiseUnaryOp.
      48                 :            :   *
      49                 :            :   * Most of the time, this is the only way that it is used, so you typically don't have to name
      50                 :            :   * CwiseUnaryOp types explicitly.
      51                 :            :   *
      52                 :            :   * \sa MatrixBase::unaryExpr(const CustomUnaryOp &) const, class CwiseBinaryOp, class CwiseNullaryOp
      53                 :            :   */
      54                 :            : template<typename UnaryOp, typename XprType>
      55                 :            : class CwiseUnaryOp : public CwiseUnaryOpImpl<UnaryOp, XprType, typename internal::traits<XprType>::StorageKind>, internal::no_assignment_operator
      56                 :            : {
      57                 :            :   public:
      58                 :            : 
      59                 :            :     typedef typename CwiseUnaryOpImpl<UnaryOp, XprType,typename internal::traits<XprType>::StorageKind>::Base Base;
      60                 :            :     EIGEN_GENERIC_PUBLIC_INTERFACE(CwiseUnaryOp)
      61                 :            :     typedef typename internal::ref_selector<XprType>::type XprTypeNested;
      62                 :            :     typedef typename internal::remove_all<XprType>::type NestedExpression;
      63                 :            : 
      64                 :            :     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
      65                 :      25436 :     explicit CwiseUnaryOp(const XprType& xpr, const UnaryOp& func = UnaryOp())
      66                 :      25436 :       : m_xpr(xpr), m_functor(func) {}
      67                 :            : 
      68                 :            :     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE EIGEN_CONSTEXPR
      69                 :      59072 :     Index rows() const EIGEN_NOEXCEPT { return m_xpr.rows(); }
      70                 :            :     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE EIGEN_CONSTEXPR
      71                 :      59072 :     Index cols() const EIGEN_NOEXCEPT { return m_xpr.cols(); }
      72                 :            : 
      73                 :            :     /** \returns the functor representing the unary operation */
      74                 :            :     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
      75                 :      25436 :     const UnaryOp& functor() const { return m_functor; }
      76                 :            : 
      77                 :            :     /** \returns the nested expression */
      78                 :            :     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
      79                 :            :     const typename internal::remove_all<XprTypeNested>::type&
      80                 :      25436 :     nestedExpression() const { return m_xpr; }
      81                 :            : 
      82                 :            :     /** \returns the nested expression */
      83                 :            :     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
      84                 :            :     typename internal::remove_all<XprTypeNested>::type&
      85                 :            :     nestedExpression() { return m_xpr; }
      86                 :            : 
      87                 :            :   protected:
      88                 :            :     XprTypeNested m_xpr;
      89                 :            :     const UnaryOp m_functor;
      90                 :            : };
      91                 :            : 
      92                 :            : // Generic API dispatcher
      93                 :            : template<typename UnaryOp, typename XprType, typename StorageKind>
      94                 :            : class CwiseUnaryOpImpl
      95                 :            :   : public internal::generic_xpr_base<CwiseUnaryOp<UnaryOp, XprType> >::type
      96                 :            : {
      97                 :            : public:
      98                 :            :   typedef typename internal::generic_xpr_base<CwiseUnaryOp<UnaryOp, XprType> >::type Base;
      99                 :            : };
     100                 :            : 
     101                 :            : } // end namespace Eigen
     102                 :            : 
     103                 :            : #endif // EIGEN_CWISE_UNARY_OP_H

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