diff options
Diffstat (limited to 'include/limits.h')
| -rw-r--r-- | include/limits.h | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/include/limits.h b/include/limits.h index 5add8fceb9..93cac49e55 100644 --- a/include/limits.h +++ b/include/limits.h @@ -22,7 +22,8 @@ #ifndef _LIBC_LIMITS_H_ #define _LIBC_LIMITS_H_ 1 -#include <features.h> +#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION +#include <bits/libc-header-start.h> /* Maximum length of any multibyte character in any locale. @@ -138,6 +139,54 @@ # endif #endif +/* The integer width macros are not defined by GCC's <limits.h> before + GCC 7, or if _GNU_SOURCE rather than + __STDC_WANT_IEC_60559_BFP_EXT__ is used to enable this feature. */ +#if __GLIBC_USE (IEC_60559_BFP_EXT) +# ifndef CHAR_WIDTH +# define CHAR_WIDTH 8 +# endif +# ifndef SCHAR_WIDTH +# define SCHAR_WIDTH 8 +# endif +# ifndef UCHAR_WIDTH +# define UCHAR_WIDTH 8 +# endif +# ifndef SHRT_WIDTH +# define SHRT_WIDTH 16 +# endif +# ifndef USHRT_WIDTH +# define USHRT_WIDTH 16 +# endif +# ifndef INT_WIDTH +# define INT_WIDTH 32 +# endif +# ifndef UINT_WIDTH +# define UINT_WIDTH 32 +# endif +# if LONG_MAX == 0x7fffffffL +# ifndef LONG_WIDTH +# define LONG_WIDTH 32 +# endif +# ifndef ULONG_WIDTH +# define ULONG_WIDTH 32 +# endif +# else +# ifndef LONG_WIDTH +# define LONG_WIDTH 64 +# endif +# ifndef ULONG_WIDTH +# define ULONG_WIDTH 64 +# endif +# endif +# ifndef LLONG_WIDTH +# define LLONG_WIDTH 64 +# endif +# ifndef ULLONG_WIDTH +# define ULLONG_WIDTH 64 +# endif +#endif /* Use IEC_60559_BFP_EXT. */ + #ifdef __USE_POSIX /* POSIX adds things to <limits.h>. */ # include <bits/posix1_lim.h> |