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C++ pod_vector::push_back方法代码示例

本文整理汇总了C++中pod_vector::push_back方法的典型用法代码示例。如果您正苦于以下问题:C++ pod_vector::push_back方法的具体用法?C++ pod_vector::push_back怎么用?C++ pod_vector::push_back使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在pod_vector的用法示例。


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示例1: get_rev

void subgraph_info::get_rev(
    const play::const_random_iterator<Addr>&   random_itr  ,
    const pod_vector<size_t>&                  dep_taddr   ,
    addr_t                                     i_dep       ,
    pod_vector<addr_t>&                        subgraph    )
{   // check sizes
    CPPAD_ASSERT_UNKNOWN( map_user_op_.size()   == n_op_ );

    // process_range_
    CPPAD_ASSERT_UNKNOWN( process_range_[i_dep] == false );
    process_range_[i_dep] = true;

    // special value; see init_rev_in_subgraph
    addr_t depend_yes = addr_t( n_dep_ );

    // assumption on i_dep
    CPPAD_ASSERT_UNKNOWN( i_dep < depend_yes );

    // start with an empty subgraph for this dependent variable
    subgraph.resize(0);

    // tape index corresponding to this dependent variable
    size_t i_var = dep_taddr[i_dep];

    // operator corresponding to this dependent variable
    size_t i_op = random_itr.var2op(i_var);
    i_op        = size_t( map_user_op_[i_op] );

    // if this variable depends on the selected indepent variables
    // process its subgraph
    CPPAD_ASSERT_UNKNOWN( in_subgraph_[i_op] != i_dep )
    if( in_subgraph_[i_op] <= depend_yes )
    {   subgraph.push_back( addr_t(i_op) );
        in_subgraph_[i_op] = i_dep;
    }

    // space used to return set of arguments that are variables
    pod_vector<size_t> argument_variable;

    // temporary space used by get_argument_variable
    pod_vector<bool> work;

    // scan all the operators in this subgraph
    size_t sub_index = 0;
    while(sub_index < subgraph.size() )
    {   // this operator connected to this dependent and selected independent
        i_op = size_t( subgraph[sub_index] );
        CPPAD_ASSERT_UNKNOWN( in_subgraph_[i_op] == i_dep );
        //
        // There must be a result for this operator
# ifndef NDEBUG
        OpCode op = random_itr.get_op(i_op);
        CPPAD_ASSERT_UNKNOWN(op == AFunOp || NumRes(op) > 0 );
# endif
        //
        // which variables are connected to this operator
        get_argument_variable(random_itr, i_op, argument_variable, work);
        for(size_t j = 0; j < argument_variable.size(); ++j)
        {   // add the corresponding operators to the subgraph
            size_t j_var = argument_variable[j];
            size_t j_op  = random_itr.var2op(j_var);
            j_op         = size_t( map_user_op_[j_op] );
            bool add = in_subgraph_[j_op] <= depend_yes;
            add     &= in_subgraph_[j_op] != i_dep;
            if( random_itr.get_op(j_op) == InvOp )
            {   CPPAD_ASSERT_UNKNOWN( j_op == j_var );
                add &= select_domain_[j_var - 1];
            }
            if( add )
            {   subgraph.push_back( addr_t(j_op) );
                in_subgraph_[j_op] = i_dep;
            }
        }
        // we are done scaning this subgraph operator
        ++sub_index;
    }
}
开发者ID:barak,项目名称:cppad,代码行数:77,代码来源:get_rev.hpp


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