2002-01-29 08:37:56 +00:00
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// Copyright (C) 2002
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2002-01-24 15:58:43 +00:00
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// Housemarque Oy
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// http://www.housemarque.com
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//
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// Permission to copy, use, modify, sell and distribute this software is
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// granted provided this copyright notice appears in all copies. This
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// software is provided "as is" without express or implied warranty, and
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// with no claim as to its suitability for any purpose.
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// See http://www.boost.org for most recent version.
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#include <boost/preprocessor/while.hpp>
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#include <boost/preprocessor/dec.hpp>
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#include <boost/preprocessor/cat.hpp>
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#include <boost/preprocessor/empty.hpp>
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// The time complexity of DELAY(N) is O(pow(2,N)).
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//
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// Handy when recompiles are too fast to take a coffee break. :)
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2002-01-25 13:54:07 +00:00
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//
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// Template metaprogramming can be used for implementing similar
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// delays. Unfortunately template instantiation consumes memory,
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// therefore compilers usually fail to fully compile long template
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2002-01-25 15:26:51 +00:00
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// based delays, because they run out of memory.
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//
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// On many compilers (e.g. g++, MSVC++), this macro takes only a
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// small amount of memory to preprocess. On some compilers (e.g.
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// MWCW), however, this macro seems to consume huge amounts of
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// memory.
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2002-01-24 15:58:43 +00:00
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#ifndef DELAY_MAX
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#define DELAY_MAX 16
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#endif
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2002-01-25 15:26:51 +00:00
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#define DELAY(N) BOOST_PP_TUPLE_ELEM(2,0,(BOOST_PP_EMPTY,BOOST_PP_WHILE(DELAY_C,BOOST_PP_CAT(DELAY_F,N),BOOST_PP_DEC(N))))()
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2002-01-24 15:58:43 +00:00
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#define DELAY_C(D,N) N
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#define DELAY_F0(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F1(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F2(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F3(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F4(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F5(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F6(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F7(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F8(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F9(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F10(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F11(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F12(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F13(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F14(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F15(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F16(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F17(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F18(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F19(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F20(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F21(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F22(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F23(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F24(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F25(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F26(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F27(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F28(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F29(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F30(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F31(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F32(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F33(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F34(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F35(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F36(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F37(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F38(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F39(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F40(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F41(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F42(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F43(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F44(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F45(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F46(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F47(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F48(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F49(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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#define DELAY_F50(D,N) BOOST_PP_IF(1,BOOST_PP_DEC(N),BOOST_PP_WHILE##D(DELAY_C,DELAY_F##N,BOOST_PP_DEC(N)))
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DELAY(DELAY_MAX)
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