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29 #ifndef _GLIBCXX_CFENV
30 #define _GLIBCXX_CFENV 1
32 #pragma GCC system_header
34 #ifndef __GXX_EXPERIMENTAL_CXX0X__
38 #if defined(_GLIBCXX_INCLUDE_AS_TR1)
39 # error C++0x header cannot be included from TR1 header
43 #if _GLIBCXX_HAVE_FENV_H
47 #if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
50 # define _GLIBCXX_INCLUDE_AS_CXX0X
51 # define _GLIBCXX_BEGIN_NAMESPACE_TR1
52 # define _GLIBCXX_END_NAMESPACE_TR1
56 # undef _GLIBCXX_END_NAMESPACE_TR1
57 # undef _GLIBCXX_BEGIN_NAMESPACE_TR1
58 # undef _GLIBCXX_INCLUDE_AS_CXX0X
61 #endif // _GLIBCXX_CFENV