AbstractLinAlgPack: C++ Interfaces For Vectors, Matrices And Related Linear Algebra Objects Version of the Day
AbstractLinAlgPack_compare_element_indexes.hpp
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00041 
00042 #ifndef COMPARE_ELEMENT_INDEXES_H
00043 #define COMPARE_ELEMENT_INDEXES_H
00044 
00045 #include <functional>
00046 
00047 #include "AbstractLinAlgPack_Types.hpp"
00048 
00049 namespace AbstractLinAlgPack {
00050 
00057 
00059 template<class T_Element>
00060 struct compare_element_indexes_less
00061   : public std::unary_function< T_Element, typename T_Element::index_type >
00062 {
00063   bool operator()(const T_Element& ele1, const T_Element& ele2) {
00064     return ele1.index() < ele2.index();
00065   }
00066   bool operator()(typename T_Element::index_type i, const T_Element& ele2) {
00067     return i < ele2.index();
00068   }
00069   bool operator()(const T_Element& ele1, typename T_Element::index_type i) {
00070     return ele1.index() < i;
00071   }
00072 };
00073 
00075 template<class T_Element>
00076 struct compare_element_indexes_equal_to
00077   : public std::unary_function< T_Element, typename T_Element::index_type >
00078 {
00079   compare_element_indexes_equal_to( typename T_Element::index_type i )
00080     : i_(i)
00081   {}
00082   bool operator()(const T_Element& ele) {
00083     return ele.index() == i_;
00084   }
00085 private:
00086   typename T_Element::index_type i_;
00087   // Not defined and not to be called
00088   compare_element_indexes_equal_to();
00089 };
00090 
00092 
00093 } // end namespace AbstractLinAlgPack
00094 
00095 #endif   // COMPARE_ELEMENT_INDEXES_H
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