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3rdparty/boost_1_81_0/boost/lambda/numeric.hpp 2.69 KB
598bfd3f   Hu Chunming   提交_GLIBCXX_USE_CX...
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  // -- numeric.hpp -- Boost Lambda Library -----------------------------------
  // Copyright (C) 2002 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
  // Copyright (C) 2002 Gary Powell (gwpowell@hotmail.com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See
  // accompanying file LICENSE_1_0.txt or copy at
  // http://www.boost.org/LICENSE_1_0.txt)
  //
  // For more information, see http://www.boost.org
  
  #ifndef BOOST_LAMBDA_NUMERIC_HPP
  #define BOOST_LAMBDA_NUMERIC_HPP
  
  #include "boost/lambda/core.hpp"
  
  #include <numeric>
  
  namespace boost {
    namespace lambda {
  
  namespace ll {
  
  // accumulate ---------------------------------
  
  struct accumulate {
    
    template <class Args>
    struct sig { 
      typedef typename boost::remove_const<
          typename boost::tuples::element<3, Args>::type 
       >::type type; 
    };
  
    template <class A, class B, class C>
    C
    operator()(A a, B b, C c) const
    { return ::std::accumulate(a, b, c); }
  
    template <class A, class B, class C, class D>
    C
    operator()(A a, B b, C c, D d) const
    { return ::std::accumulate(a, b, c, d); }
  };
  
  // inner_product ---------------------------------
  
  struct inner_product {
    
    template <class Args>
    struct sig { 
      typedef typename boost::remove_const<
          typename boost::tuples::element<4, Args>::type 
       >::type type; 
    };
  
    template <class A, class B, class C, class D>
    D
    operator()(A a, B b, C c, D d) const
    { return ::std::inner_product(a, b, c, d); }
  
    template <class A, class B, class C, class D, class E, class F>
    D
    operator()(A a, B b, C c, D d, E e, F f) const
    { return ::std::inner_product(a, b, c, d, e, f); }
  };
  
  
  // partial_sum ---------------------------------
  
  struct partial_sum {
    
    template <class Args>
    struct sig { 
      typedef typename boost::remove_const<
          typename boost::tuples::element<3, Args>::type 
       >::type type; 
    };
  
    template <class A, class B, class C>
    C
    operator()(A a, B b, C c) const
    { return ::std::partial_sum(a, b, c); }
  
    template <class A, class B, class C, class D>
    C
    operator()(A a, B b, C c, D d) const
    { return ::std::partial_sum(a, b, c, d); }
  };
  
  // adjacent_difference ---------------------------------
  
  struct adjacent_difference {
    
    template <class Args>
    struct sig { 
      typedef typename boost::remove_const<
          typename boost::tuples::element<3, Args>::type 
       >::type type; 
    };
  
    template <class A, class B, class C>
    C
    operator()(A a, B b, C c) const
    { return ::std::adjacent_difference(a, b, c); }
  
    template <class A, class B, class C, class D>
    C
    operator()(A a, B b, C c, D d) const
    { return ::std::adjacent_difference(a, b, c, d); }
  };
  
  } // end of ll namespace
  
  } // end of lambda namespace
  } // end of boost namespace
  
  
  
  #endif