The BOOST_PP_ITERATION_START macro expands to the lower bound of the current file-iteration depth.

Usage

BOOST_PP_ITERATION_START()

Remarks

This macro is only valid when a file-iteration is in progress.

Requirements

Header:  <boost/preprocessor/iteration/iterate.hpp>

Sample Code

// file.h
#if !BOOST_PP_IS_ITERATING

   #ifndef FILE_H_
   #define FILE_H_

   #include <boost/preprocessor/iteration/iterate.hpp>

   #define BOOST_PP_ITERATION_PARAMS_1 (3, (1, 10, "file.h"))
   #include BOOST_PP_ITERATE()

   #endif

#elif BOOST_PP_ITERATION_DEPTH() == 1

   start -> BOOST_PP_ITERATION_START()
   iteration -> BOOST_PP_ITERATION()
   finish -> BOOST_PP_ITERATION_FINISH()

#endif