97 lines
4.1 KiB
Plaintext
97 lines
4.1 KiB
Plaintext
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/*
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[auto_generated]
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boost/numeric/odeint/util/n_ary_helper.hpp
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Macros to generate scale_sumN and for_eachN functors.
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Copyright 2013 Karsten Ahnert
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Copyright 2013 Mario Mulansky
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Copyright 2013 Pascal Germroth
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or
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copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_NUMERIC_ODEINT_UTIL_N_ARY_HELPER_HPP_INCLUDED
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#define BOOST_NUMERIC_ODEINT_UTIL_N_ARY_HELPER_HPP_INCLUDED
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#include <boost/preprocessor/repetition.hpp>
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// like BOOST_PP_ENUM_SHIFTED but with a comma in front like _TRAILING
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#define BOOST_ODEINT_ENUM_TRAILING_SHIFTED_PARAMS(count, param) \
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BOOST_PP_COMMA_IF(BOOST_PP_DEC(count)) \
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BOOST_PP_ENUM_SHIFTED_PARAMS(count, param)
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#define BOOST_ODEINT_ENUM_TRAILING_SHIFTED_BINARY_PARAMS(count, p1, p2) \
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BOOST_PP_COMMA_IF(BOOST_PP_DEC(count)) \
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BOOST_PP_ENUM_SHIFTED_BINARY_PARAMS(count, p1, p2)
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// like BOOST_PP_ENUM_SHIFTED_BINARY_PARAMS(n, p1, p2) but p2 is shifted left.
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// generate "p1 ## 0 = p2, p1 ## 1 = p3 ## 0, p1 ## 2 = p3 ## 1"
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#define BOOST_ODEINT_ENUM_LSHIFTED_BINARY_PARAMS(count, p1, p2, p3) \
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BOOST_PP_ENUM(count, BOOST_ODEINT_ENUM_LSHIFTED_BINARY_PARAMS_, (p1, p2, p3))
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#define BOOST_ODEINT_ENUM_LSHIFTED_BINARY_PARAMS_(z, n, data) \
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BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(3, 0, data), n) \
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BOOST_PP_IF(n, \
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BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(3, 2, data), BOOST_PP_DEC(n)), \
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BOOST_PP_TUPLE_ELEM(3, 1, data))
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// like BOOST_PP_ENUM_BINARY_PARAMS(n, p1, p2) but with statements.
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// "p1 ## 0 p2 ## 0 ; p1 ## 1 p2 ## 1 ; ..."
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#define BOOST_ODEINT_ENUM_BINARY_STATEMENTS(count, p1, p2) \
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BOOST_PP_REPEAT(count, BOOST_ODEINT_ENUM_BINARY_STATEMENTS_, (p1, p2))
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#define BOOST_ODEINT_ENUM_BINARY_STATEMENTS_(z, n, data) \
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BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2, 0, data), n) \
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BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2, 1, data), n) ;
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// like BOOST_PP_ENUM_BINARY_PARAMS(n, p1, p2) but p2 is in parens.
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// "p1 ## 0 (p2 ## 0) , p1 ## 1 (p2 ## 1) , ..."
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#define BOOST_ODEINT_ENUM_UNARY_CALLS(count, p1, p2) \
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BOOST_PP_ENUM(count, BOOST_ODEINT_ENUM_UNARY_CALLS_, (p1, p2))
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#define BOOST_ODEINT_ENUM_SHIFTED_UNARY_CALLS(count, p1, p2) \
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BOOST_PP_ENUM_SHIFTED(count, BOOST_ODEINT_ENUM_UNARY_CALLS_, (p1, p2))
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#define BOOST_ODEINT_ENUM_TRAILING_SHIFTED_UNARY_CALLS(count, p1, p2) \
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BOOST_PP_COMMA_IF(BOOST_PP_DEC(count)) \
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BOOST_PP_ENUM_SHIFTED(count, BOOST_ODEINT_ENUM_UNARY_CALLS_, (p1, p2))
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#define BOOST_ODEINT_ENUM_UNARY_CALLS_(z, n, data) \
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BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2, 0, data), n) \
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( BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2, 1, data), n) )
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// maximum arity + 1 for scale_sum and for_each
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#define BOOST_ODEINT_N_ARY_MAX 16
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// generate scale_sum1 to scale_sumN, operator body generated by macro(N)
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#define BOOST_ODEINT_GEN_SCALE_SUM(macro) \
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BOOST_PP_REPEAT_FROM_TO(1, BOOST_ODEINT_N_ARY_MAX, BOOST_ODEINT_GEN_SCALE_SUM_, macro)
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#define BOOST_ODEINT_GEN_SCALE_SUM_(z, n, macro) \
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template< BOOST_ODEINT_ENUM_LSHIFTED_BINARY_PARAMS(n, class Fac, = double, = Fac) > \
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struct BOOST_PP_CAT(scale_sum, n) \
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{ \
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BOOST_ODEINT_ENUM_BINARY_STATEMENTS(n, const Fac, m_alpha) \
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\
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BOOST_PP_CAT(scale_sum, n) \
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( BOOST_PP_ENUM_BINARY_PARAMS(n, Fac, alpha) ) \
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: BOOST_ODEINT_ENUM_UNARY_CALLS(n, m_alpha, alpha) {} \
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\
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template< BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(n), class T) > \
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void operator()( T0 &t0 \
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BOOST_ODEINT_ENUM_TRAILING_SHIFTED_BINARY_PARAMS(BOOST_PP_INC(n), const T, &t) \
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) const \
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{ macro(n) } \
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typedef void result_type; \
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};
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// generate for_each1 to for_eachN, body generated by macro(N)
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#define BOOST_ODEINT_GEN_FOR_EACH(macro) \
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BOOST_PP_REPEAT_FROM_TO(1, BOOST_ODEINT_N_ARY_MAX, BOOST_ODEINT_GEN_FOR_EACH_, macro)
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#define BOOST_ODEINT_GEN_FOR_EACH_(z, n, macro) \
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template< BOOST_PP_ENUM_PARAMS(n, class S) , class Op > \
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static void for_each##n ( BOOST_PP_ENUM_BINARY_PARAMS(n, S, &s) , Op op ) \
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{ macro(n) }
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#endif
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