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| author | Joseph Myers <joseph@codesourcery.com> | 2013-11-04 15:43:57 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2013-11-04 15:43:57 +0000 |
| commit | 1484e65736f4cab27e5051e0f06be8470e69af82 (patch) | |
| tree | 2661e8c53b60acf5d5685e2402b2e94cdeb8c649 /include | |
| parent | cd3e2ac55e6848bc725a20978a4c2a7ab766bd86 (diff) | |
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Define __STDC_IEC_559* based on __GCC_IEC_559*.
Diffstat (limited to 'include')
| -rw-r--r-- | include/stdc-predef.h | 25 |
1 files changed, 22 insertions, 3 deletions
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. */ |