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From: Giordano Bruno (giordano.wolaniuk_at_[hidden])
Date: 2011-08-18 16:10:21

 Hi people, I want to use boost_pp in my embedded systems development
 using avr-gcc (C language). I was trying to understand how boostpp
 works, but it looks fuzzy to me.

 Can you explain me what is this "0"  in the line 40 from
 preprocessor/comparison/less.hpp:

 define BOOST_PP_LESS_D(d, x, y) BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(x, y),
 BOOST_PP_LESS_EQUAL_D, 0 BOOST_PP_TUPLE_EAT_3)(d, x, y)

 http://www.boost.org/doc/libs/1_43_0/boost/preprocessor/comparison/less.hpp

 thanks
 Giordano
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