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Add isnan() and isinf() to the global namespace in libstdc++'s <cmath>.

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The standard (n3242, section 17.6.1.1, paragraph 4) says that, because these are
declared as macros in the C specification (even though they are
implemented as functions in the C++ library) they should be in the global
namespace.

A surprising number of configure checks rely on this.  It was broken by recent
cleanups to math.h.
This commit is contained in:
David Chisnall 2013-07-23 10:23:43 +00:00
parent ae9742be10
commit e2a74d7247
1 changed files with 2 additions and 0 deletions
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2
contrib/libstdc++/include/c_std/std_cmath.h
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@ -589,6 +589,8 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
{ return ::__gnu_cxx::__capture_isunordered(__f1, __f2); }
_GLIBCXX_END_NAMESPACE
using std::isnan;
using std::isinf;
#endif /* _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC */
#endif