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Hi! In <bits/mathcalls.h>, __BEGIN_NAMESPACE_C99 is guarded with: #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 condition while the corresponding __END_NAMESPACE_C99 with: #ifdef __USE_ISOC99. So, if in C++, _GLIBCPP_USE_NAMESPACES is defined, either __USE_MISC or __USE_XOPEN_EXTENDED and not __USE_ISOC99, we have unclosed namespace. Additionally, it seems that currently scalb{,l,f} prototype is only provided #if (defined __USE_MISC || defined __USE_XOPEN_EXTENDED) && defined __USE_ISOC99 while in revision 1.18 and older it was provided even if not __USE_ISOC99 (after all, scalb{,l,f} is not in ISO C99). 2006-02-01 Jakub Jelinek <jakub@redhat.com> * math/bits/mathcalls.h: Guard __END_NAMESPACE_C99 with the same #if condition as corresponding __BEGIN_NAMESPACE_C99. (scalb): Don't define only if __USE_ISOC99. --- libc/math/bits/mathcalls.h.jj 2006-01-18 09:28:38.000000000 +0100 +++ libc/math/bits/mathcalls.h 2006-02-01 16:17:46.000000000 +0100 @@ -353,10 +353,13 @@ __MATHDECL_1 (int, __signbit,, (_Mdouble /* Multiply-add function computed as a ternary operation. */ __MATHCALL (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z)); +#endif /* Use ISO C99. */ + +#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 __END_NAMESPACE_C99 +#endif -# if defined __USE_MISC || defined __USE_XOPEN_EXTENDED +#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED /* Return X times (2 to the Nth power). */ __MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n)); -# endif -#endif /* Use ISO C99. */ +#endif Jakub
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