1 | // This file is part of Eigen, a lightweight C++ template library
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2 | // for linear algebra.
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3 | //
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4 | // Copyright (C) 2008-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
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5 | //
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6 | // This Source Code Form is subject to the terms of the Mozilla
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7 | // Public License v. 2.0. If a copy of the MPL was not distributed
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8 | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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9 |
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10 | #ifndef EIGEN_SPARSE_CWISE_UNARY_OP_H
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11 | #define EIGEN_SPARSE_CWISE_UNARY_OP_H
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12 |
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13 | namespace Eigen {
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14 |
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15 | template<typename UnaryOp, typename MatrixType>
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16 | class CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>
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17 | : public SparseMatrixBase<CwiseUnaryOp<UnaryOp, MatrixType> >
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18 | {
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19 | public:
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20 |
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21 | class InnerIterator;
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22 | class ReverseInnerIterator;
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23 |
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24 | typedef CwiseUnaryOp<UnaryOp, MatrixType> Derived;
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25 | EIGEN_SPARSE_PUBLIC_INTERFACE(Derived)
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26 |
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27 | protected:
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28 | typedef typename internal::traits<Derived>::_XprTypeNested _MatrixTypeNested;
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29 | typedef typename _MatrixTypeNested::InnerIterator MatrixTypeIterator;
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30 | typedef typename _MatrixTypeNested::ReverseInnerIterator MatrixTypeReverseIterator;
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31 | };
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32 |
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33 | template<typename UnaryOp, typename MatrixType>
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34 | class CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::InnerIterator
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35 | : public CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::MatrixTypeIterator
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36 | {
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37 | typedef typename CwiseUnaryOpImpl::Scalar Scalar;
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38 | typedef typename CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::MatrixTypeIterator Base;
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39 | public:
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40 |
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41 | EIGEN_STRONG_INLINE InnerIterator(const CwiseUnaryOpImpl& unaryOp, typename CwiseUnaryOpImpl::Index outer)
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42 | : Base(unaryOp.derived().nestedExpression(),outer), m_functor(unaryOp.derived().functor())
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43 | {}
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44 |
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45 | EIGEN_STRONG_INLINE InnerIterator& operator++()
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46 | { Base::operator++(); return *this; }
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47 |
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48 | EIGEN_STRONG_INLINE typename CwiseUnaryOpImpl::Scalar value() const { return m_functor(Base::value()); }
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49 |
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50 | protected:
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51 | const UnaryOp m_functor;
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52 | private:
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53 | typename CwiseUnaryOpImpl::Scalar& valueRef();
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54 | };
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55 |
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56 | template<typename UnaryOp, typename MatrixType>
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57 | class CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::ReverseInnerIterator
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58 | : public CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::MatrixTypeReverseIterator
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59 | {
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60 | typedef typename CwiseUnaryOpImpl::Scalar Scalar;
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61 | typedef typename CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::MatrixTypeReverseIterator Base;
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62 | public:
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63 |
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64 | EIGEN_STRONG_INLINE ReverseInnerIterator(const CwiseUnaryOpImpl& unaryOp, typename CwiseUnaryOpImpl::Index outer)
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65 | : Base(unaryOp.derived().nestedExpression(),outer), m_functor(unaryOp.derived().functor())
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66 | {}
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67 |
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68 | EIGEN_STRONG_INLINE ReverseInnerIterator& operator--()
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69 | { Base::operator--(); return *this; }
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70 |
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71 | EIGEN_STRONG_INLINE typename CwiseUnaryOpImpl::Scalar value() const { return m_functor(Base::value()); }
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72 |
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73 | protected:
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74 | const UnaryOp m_functor;
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75 | private:
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76 | typename CwiseUnaryOpImpl::Scalar& valueRef();
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77 | };
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78 |
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79 | template<typename ViewOp, typename MatrixType>
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80 | class CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>
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81 | : public SparseMatrixBase<CwiseUnaryView<ViewOp, MatrixType> >
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82 | {
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83 | public:
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84 |
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85 | class InnerIterator;
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86 | class ReverseInnerIterator;
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87 |
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88 | typedef CwiseUnaryView<ViewOp, MatrixType> Derived;
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89 | EIGEN_SPARSE_PUBLIC_INTERFACE(Derived)
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90 |
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91 | protected:
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92 | typedef typename internal::traits<Derived>::_MatrixTypeNested _MatrixTypeNested;
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93 | typedef typename _MatrixTypeNested::InnerIterator MatrixTypeIterator;
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94 | typedef typename _MatrixTypeNested::ReverseInnerIterator MatrixTypeReverseIterator;
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95 | };
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96 |
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97 | template<typename ViewOp, typename MatrixType>
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98 | class CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::InnerIterator
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99 | : public CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::MatrixTypeIterator
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100 | {
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101 | typedef typename CwiseUnaryViewImpl::Scalar Scalar;
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102 | typedef typename CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::MatrixTypeIterator Base;
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103 | public:
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104 |
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105 | EIGEN_STRONG_INLINE InnerIterator(const CwiseUnaryViewImpl& unaryOp, typename CwiseUnaryViewImpl::Index outer)
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106 | : Base(unaryOp.derived().nestedExpression(),outer), m_functor(unaryOp.derived().functor())
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107 | {}
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108 |
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109 | EIGEN_STRONG_INLINE InnerIterator& operator++()
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110 | { Base::operator++(); return *this; }
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111 |
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112 | EIGEN_STRONG_INLINE typename CwiseUnaryViewImpl::Scalar value() const { return m_functor(Base::value()); }
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113 | EIGEN_STRONG_INLINE typename CwiseUnaryViewImpl::Scalar& valueRef() { return m_functor(Base::valueRef()); }
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114 |
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115 | protected:
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116 | const ViewOp m_functor;
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117 | };
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118 |
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119 | template<typename ViewOp, typename MatrixType>
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120 | class CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::ReverseInnerIterator
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121 | : public CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::MatrixTypeReverseIterator
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122 | {
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123 | typedef typename CwiseUnaryViewImpl::Scalar Scalar;
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124 | typedef typename CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::MatrixTypeReverseIterator Base;
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125 | public:
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126 |
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127 | EIGEN_STRONG_INLINE ReverseInnerIterator(const CwiseUnaryViewImpl& unaryOp, typename CwiseUnaryViewImpl::Index outer)
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128 | : Base(unaryOp.derived().nestedExpression(),outer), m_functor(unaryOp.derived().functor())
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129 | {}
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130 |
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131 | EIGEN_STRONG_INLINE ReverseInnerIterator& operator--()
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132 | { Base::operator--(); return *this; }
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133 |
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134 | EIGEN_STRONG_INLINE typename CwiseUnaryViewImpl::Scalar value() const { return m_functor(Base::value()); }
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135 | EIGEN_STRONG_INLINE typename CwiseUnaryViewImpl::Scalar& valueRef() { return m_functor(Base::valueRef()); }
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136 |
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137 | protected:
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138 | const ViewOp m_functor;
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139 | };
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140 |
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141 | template<typename Derived>
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142 | EIGEN_STRONG_INLINE Derived&
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143 | SparseMatrixBase<Derived>::operator*=(const Scalar& other)
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144 | {
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145 | for (Index j=0; j<outerSize(); ++j)
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146 | for (typename Derived::InnerIterator i(derived(),j); i; ++i)
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147 | i.valueRef() *= other;
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148 | return derived();
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149 | }
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150 |
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151 | template<typename Derived>
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152 | EIGEN_STRONG_INLINE Derived&
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153 | SparseMatrixBase<Derived>::operator/=(const Scalar& other)
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154 | {
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155 | for (Index j=0; j<outerSize(); ++j)
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156 | for (typename Derived::InnerIterator i(derived(),j); i; ++i)
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157 | i.valueRef() /= other;
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158 | return derived();
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159 | }
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160 |
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161 | } // end namespace Eigen
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162 |
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163 | #endif // EIGEN_SPARSE_CWISE_UNARY_OP_H
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