opt_op_info.hpp

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# ifndef CPPAD_LOCAL_OPTIMIZE_OPT_OP_INFO_HPP
# define CPPAD_LOCAL_OPTIMIZE_OPT_OP_INFO_HPP
/* --------------------------------------------------------------------------
CppAD: C++ Algorithmic Differentiation: Copyright (C) 2003-17 Bradley M. Bell

CppAD is distributed under multiple licenses. This distribution is under
the terms of the
                    Eclipse Public License Version 1.0.

A copy of this license is included in the COPYING file of this distribution.
Please visit http://www.coin-or.org/CppAD/ for information on other licenses.
-------------------------------------------------------------------------- */

# include <cppad/local/op_code.hpp>
# include <cppad/local/optimize/usage.hpp>

// BEGIN_CPPAD_LOCAL_OPTIMIZE_NAMESPACE
namespace CppAD { namespace local { namespace optimize {

/// information for one operator
struct struct_opt_op_info {
     /*!
     previous operator that can be used in place of this operator.
     \li
     If previous == 0, no such operator was found.
     \li
     If previous != 0,
     opt_op_info[pevious].previous == 0 and
     opt_op_info[previous].usage == yes_usage.
     */
     addr_t previous;

     /// How is this operator used to compute the dependent variables.
     /// If usage = csum_usage or usage = no_usage, previous = 0.
     enum_usage usage;

};

} } } // END_CPPAD_LOCAL_OPTIMIZE_NAMESPACE
# endif