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207 lines
5 KiB
C
207 lines
5 KiB
C
/* TuxSH: I added INC/DEC_10 to INC/DEC_32; tuples */
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#ifndef EXOSPHERE_PREPROCESSOR_H
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#define EXOSPHERE_PREPROCESSOR_H
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/*=============================================================================
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Copyright (c) 2015 Paul Fultz II
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cloak.h
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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/*#ifndef CLOAK_GUARD_H
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#define CLOAK_GUARD_H*/
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#define CAT(a, ...) PRIMITIVE_CAT(a, __VA_ARGS__)
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#define PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
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#define COMPL(b) PRIMITIVE_CAT(COMPL_, b)
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#define COMPL_0 1
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#define COMPL_1 0
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#define BITAND(x) PRIMITIVE_CAT(BITAND_, x)
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#define BITAND_0(y) 0
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#define BITAND_1(y) y
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#define INC(x) PRIMITIVE_CAT(INC_, x)
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#define INC_0 1
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#define INC_1 2
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#define INC_2 3
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#define INC_3 4
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#define INC_4 5
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#define INC_5 6
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#define INC_6 7
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#define INC_7 8
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#define INC_8 9
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#define INC_9 10
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#define INC_10 11
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#define INC_11 12
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#define INC_12 13
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#define INC_13 14
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#define INC_14 15
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#define INC_15 16
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#define INC_16 17
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#define INC_17 18
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#define INC_18 19
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#define INC_19 20
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#define INC_20 21
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#define INC_21 22
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#define INC_22 23
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#define INC_23 24
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#define INC_24 25
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#define INC_25 26
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#define INC_26 27
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#define INC_27 28
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#define INC_28 29
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#define INC_29 30
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#define INC_30 31
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#define INC_31 32
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#define INC_32 32
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#define INC_33 33
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#define DEC(x) PRIMITIVE_CAT(DEC_, x)
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#define DEC_0 0
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#define DEC_1 0
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#define DEC_2 1
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#define DEC_3 2
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#define DEC_4 3
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#define DEC_5 4
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#define DEC_6 5
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#define DEC_7 6
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#define DEC_8 7
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#define DEC_9 8
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#define DEC_10 9
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#define DEC_11 10
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#define DEC_12 11
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#define DEC_13 12
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#define DEC_14 13
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#define DEC_15 14
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#define DEC_16 15
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#define DEC_17 16
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#define DEC_18 17
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#define DEC_19 18
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#define DEC_20 19
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#define DEC_21 20
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#define DEC_22 21
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#define DEC_23 22
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#define DEC_24 23
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#define DEC_25 24
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#define DEC_26 25
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#define DEC_27 26
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#define DEC_28 27
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#define DEC_29 28
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#define DEC_30 29
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#define DEC_31 30
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#define DEC_32 31
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#define DEC_33 32
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#define CHECK_N(x, n, ...) n
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#define CHECK(...) CHECK_N(__VA_ARGS__, 0,)
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#define PROBE(x) x, 1,
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#define IS_PAREN(x) CHECK(IS_PAREN_PROBE x)
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#define IS_PAREN_PROBE(...) PROBE(~)
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#define NOT(x) CHECK(PRIMITIVE_CAT(NOT_, x))
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#define NOT_0 PROBE(~)
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#define COMPL(b) PRIMITIVE_CAT(COMPL_, b)
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#define COMPL_0 1
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#define COMPL_1 0
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#define BOOL(x) COMPL(NOT(x))
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#define IIF(c) PRIMITIVE_CAT(IIF_, c)
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#define IIF_0(t, ...) __VA_ARGS__
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#define IIF_1(t, ...) t
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#define IF(c) IIF(BOOL(c))
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#define EAT(...)
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#define EXPAND(...) __VA_ARGS__
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#define WHEN(c) IF(c)(EXPAND, EAT)
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#define EMPTY()
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#define DEFER(id) id EMPTY()
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#define OBSTRUCT(id) id DEFER(EMPTY)()
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#define EVAL(...) EVAL1(EVAL1(EVAL1(__VA_ARGS__)))
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#define EVAL1(...) EVAL2(EVAL2(EVAL2(__VA_ARGS__)))
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#define EVAL2(...) EVAL3(EVAL3(EVAL3(__VA_ARGS__)))
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#define EVAL3(...) EVAL4(EVAL4(EVAL4(__VA_ARGS__)))
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#define EVAL4(...) EVAL5(EVAL5(EVAL5(__VA_ARGS__)))
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#define EVAL5(...) __VA_ARGS__
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#define REPEAT(count, macro, ...) \
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WHEN(count) \
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( \
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OBSTRUCT(REPEAT_INDIRECT) () \
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( \
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DEC(count), macro, __VA_ARGS__ \
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) \
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OBSTRUCT(macro) \
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( \
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DEC(count), __VA_ARGS__ \
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) \
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)
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#define REPEAT_INDIRECT() REPEAT
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#define WHILE(pred, op, ...) \
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IF(pred(__VA_ARGS__)) \
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( \
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OBSTRUCT(WHILE_INDIRECT) () \
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( \
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pred, op, op(__VA_ARGS__) \
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), \
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__VA_ARGS__ \
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)
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#define WHILE_INDIRECT() WHILE
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#define PRIMITIVE_COMPARE(x, y) IS_PAREN \
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( \
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COMPARE_ ## x ( COMPARE_ ## y) (()) \
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)
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#define IS_COMPARABLE(x) IS_PAREN( CAT(COMPARE_, x) (()) )
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#define NOT_EQUAL(x, y) \
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IIF(BITAND(IS_COMPARABLE(x))(IS_COMPARABLE(y)) ) \
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( \
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PRIMITIVE_COMPARE, \
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1 EAT \
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)(x, y)
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#define EQUAL(x, y) COMPL(NOT_EQUAL(x, y))
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#define COMMA() ,
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#define COMMA_IF(n) IF(n)(COMMA, EAT)()
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#define PLUS() +
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#define _TUPLE_ELEM_0(a, ...) a
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#define _TUPLE_ELEM_1(a, b, ...) b
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#define _TUPLE_ELEM_2(a, b, c, ...) c
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#define _TUPLE_ELEM_3(a, b, c, d, ...) d
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#define _TUPLE_ELEM_4(a, b, c, d, e, ...) e
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#define TUPLE_ELEM_0(T) EVAL(_TUPLE_ELEM_0 T)
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#define TUPLE_ELEM_1(T) EVAL(_TUPLE_ELEM_1 T)
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#define TUPLE_ELEM_2(T) EVAL(_TUPLE_ELEM_2 T)
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#define TUPLE_ELEM_3(T) EVAL(_TUPLE_ELEM_3 T)
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#define TUPLE_ELEM_4(T) EVAL(_TUPLE_ELEM_4 T)
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#define _TUPLE_FOLD_LEFT_0(i, T, op) (_TUPLE_ELEM_0 CAT(T,i)) op()
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#define _TUPLE_FOLD_LEFT_1(i, T, op) (_TUPLE_ELEM_1 CAT(T,i)) op()
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#define _TUPLE_FOLD_LEFT_2(i, T, op) (_TUPLE_ELEM_2 CAT(T,i)) op()
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#define _TUPLE_FOLD_LEFT_3(i, T, op) (_TUPLE_ELEM_3 CAT(T,i)) op()
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#define _TUPLE_FOLD_LEFT_4(i, T, op) (_TUPLE_ELEM_4 CAT(T,i)) op()
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#define TUPLE_FOLD_LEFT_0(len, T, op) EVAL(REPEAT(len, _TUPLE_FOLD_LEFT_0, T, op))
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#define TUPLE_FOLD_LEFT_1(len, T, op) EVAL(REPEAT(len, _TUPLE_FOLD_LEFT_1, T, op))
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#define TUPLE_FOLD_LEFT_2(len, T, op) EVAL(REPEAT(len, _TUPLE_FOLD_LEFT_2, T, op))
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#define TUPLE_FOLD_LEFT_3(len, T, op) EVAL(REPEAT(len, _TUPLE_FOLD_LEFT_3, T, op))
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#define TUPLE_FOLD_LEFT_4(len, T, op) EVAL(REPEAT(len, _TUPLE_FOLD_LEFT_4, T, op))
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#endif
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