diff options
Diffstat (limited to 'lib/stdint.in.h')
| -rw-r--r-- | lib/stdint.in.h | 96 |
1 files changed, 55 insertions, 41 deletions
diff --git a/lib/stdint.in.h b/lib/stdint.in.h index 09ac138b851..b6d08c754ae 100644 --- a/lib/stdint.in.h +++ b/lib/stdint.in.h @@ -270,26 +270,36 @@ typedef unsigned long int gl_uintptr_t; /* Note: These types are compiler dependent. It may be unwise to use them in public header files. */ -#undef intmax_t -#if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1 +/* If the system defines INTMAX_MAX, assume that intmax_t works, and + similarly for UINTMAX_MAX and uintmax_t. This avoids problems with + assuming one type where another is used by the system. */ + +#ifndef INTMAX_MAX +# undef INTMAX_C +# undef intmax_t +# if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1 typedef long long int gl_intmax_t; -# define intmax_t gl_intmax_t -#elif defined GL_INT64_T -# define intmax_t int64_t -#else +# define intmax_t gl_intmax_t +# elif defined GL_INT64_T +# define intmax_t int64_t +# else typedef long int gl_intmax_t; -# define intmax_t gl_intmax_t +# define intmax_t gl_intmax_t +# endif #endif -#undef uintmax_t -#if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1 +#ifndef UINTMAX_MAX +# undef UINTMAX_C +# undef uintmax_t +# if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1 typedef unsigned long long int gl_uintmax_t; -# define uintmax_t gl_uintmax_t -#elif defined GL_UINT64_T -# define uintmax_t uint64_t -#else +# define uintmax_t gl_uintmax_t +# elif defined GL_UINT64_T +# define uintmax_t uint64_t +# else typedef unsigned long int gl_uintmax_t; -# define uintmax_t gl_uintmax_t +# define uintmax_t gl_uintmax_t +# endif #endif /* Verify that intmax_t and uintmax_t have the same size. Too much code @@ -431,21 +441,23 @@ typedef int _verify_intmax_size[sizeof (intmax_t) == sizeof (uintmax_t) /* 7.18.2.5. Limits of greatest-width integer types */ -#undef INTMAX_MIN -#undef INTMAX_MAX -#ifdef INT64_MAX -# define INTMAX_MIN INT64_MIN -# define INTMAX_MAX INT64_MAX -#else -# define INTMAX_MIN INT32_MIN -# define INTMAX_MAX INT32_MAX +#ifndef INTMAX_MAX +# undef INTMAX_MIN +# ifdef INT64_MAX +# define INTMAX_MIN INT64_MIN +# define INTMAX_MAX INT64_MAX +# else +# define INTMAX_MIN INT32_MIN +# define INTMAX_MAX INT32_MAX +# endif #endif -#undef UINTMAX_MAX -#ifdef UINT64_MAX -# define UINTMAX_MAX UINT64_MAX -#else -# define UINTMAX_MAX UINT32_MAX +#ifndef UINTMAX_MAX +# ifdef UINT64_MAX +# define UINTMAX_MAX UINT64_MAX +# else +# define UINTMAX_MAX UINT32_MAX +# endif #endif /* 7.18.3. Limits of other integer types */ @@ -568,22 +580,24 @@ typedef int _verify_intmax_size[sizeof (intmax_t) == sizeof (uintmax_t) /* 7.18.4.2. Macros for greatest-width integer constants */ -#undef INTMAX_C -#if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1 -# define INTMAX_C(x) x##LL -#elif defined GL_INT64_T -# define INTMAX_C(x) INT64_C(x) -#else -# define INTMAX_C(x) x##L +#ifndef INTMAX_C +# if @HAVE_LONG_LONG_INT@ && LONG_MAX >> 30 == 1 +# define INTMAX_C(x) x##LL +# elif defined GL_INT64_T +# define INTMAX_C(x) INT64_C(x) +# else +# define INTMAX_C(x) x##L +# endif #endif -#undef UINTMAX_C -#if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1 -# define UINTMAX_C(x) x##ULL -#elif defined GL_UINT64_T -# define UINTMAX_C(x) UINT64_C(x) -#else -# define UINTMAX_C(x) x##UL +#ifndef UINTMAX_C +# if @HAVE_UNSIGNED_LONG_LONG_INT@ && ULONG_MAX >> 31 == 1 +# define UINTMAX_C(x) x##ULL +# elif defined GL_UINT64_T +# define UINTMAX_C(x) UINT64_C(x) +# else +# define UINTMAX_C(x) x##UL +# endif #endif #endif /* !defined __cplusplus || defined __STDC_CONSTANT_MACROS */ |