29#ifndef _GLIBCXX_TR1_CCTYPE
30#define _GLIBCXX_TR1_CCTYPE 1
37#ifdef _GLIBCXX_USE_C99_CTYPE_TR1
41namespace std _GLIBCXX_VISIBILITY(default)
43_GLIBCXX_BEGIN_NAMESPACE_VERSION
50_GLIBCXX_END_NAMESPACE_VERSION
ISO C++ entities toplevel namespace is std.