/usr/include/boost/config/no_tr1
Edit: /usr/include/boost/config/no_tr1/cmath.hpp (838B)
// (C) Copyright John Maddock 2008.
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// The aim of this header is just to include
but to do
// so in a way that does not result in recursive inclusion of
// the Boost TR1 components if boost/tr1/tr1/cmath is in the
// include search path. We have to do this to avoid circular
// dependencies:
//
#ifndef BOOST_CONFIG_CMATH
# define BOOST_CONFIG_CMATH
# ifndef BOOST_TR1_NO_RECURSION
# define BOOST_TR1_NO_RECURSION
# define BOOST_CONFIG_NO_CMATH_RECURSION
# endif
# include
# ifdef BOOST_CONFIG_NO_CMATH_RECURSION
# undef BOOST_TR1_NO_RECURSION
# undef BOOST_CONFIG_NO_CMATH_RECURSION
# endif
#endif