diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | include/stdc-predef.h | 25 |
2 files changed, 29 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog index 4d43eb041e..1fd2463c2e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2013-11-04 Joseph Myers <joseph@codesourcery.com> + + * include/stdc-predef.h [__GCC_IEC_559] (__STDC_IEC_559__): Define + depending on [__GCC_IEC_559 > 0]. + [__GCC_IEC_559_COMPLEX] (__STDC_IEC_559_COMPLEX__): Define + depending on [__GCC_IEC_559_COMPLEX > 0]. + 2013-11-03 Chris Leonard <cjl@sugarlabs.org> * locale/iso-639.def: Add Quechua, Southern (quz) and Silesian (szl) diff --git a/include/stdc-predef.h b/include/stdc-predef.h index b9c9967d9d..f8cb2cb97a 100644 --- a/include/stdc-predef.h +++ b/include/stdc-predef.h @@ -26,9 +26,28 @@ explicitly includes a system header. GCC knows the name of this header in order to preinclude it. */ -/* We do support the IEC 559 math functionality, real and complex. */ -#define __STDC_IEC_559__ 1 -#define __STDC_IEC_559_COMPLEX__ 1 +/* glibc's intent is to support the IEC 559 math functionality, real + and complex. If the GCC (4.9 and later) predefined macros + specifying compiler intent are available, use them to determine + whether the overall intent is to support these features; otherwise, + presume an older compiler has intent to support these features and + define these macros by default. */ + +#ifdef __GCC_IEC_559 +# if __GCC_IEC_559 > 0 +# define __STDC_IEC_559__ 1 +# endif +#else +# define __STDC_IEC_559__ 1 +#endif + +#ifdef __GCC_IEC_559_COMPLEX +# if __GCC_IEC_559_COMPLEX > 0 +# define __STDC_IEC_559_COMPLEX__ 1 +# endif +#else +# define __STDC_IEC_559_COMPLEX__ 1 +#endif /* wchar_t uses ISO/IEC 10646 (2nd ed., published 2011-03-15) / Unicode 6.0. */ |