* extend.texi (-fthis-is-variable): Undocument.

[pf3gnuchains/gcc-fork.git] / gcc / glimits.h

diff --git a/gcc/glimits.h b/gcc/glimits.h
index 0ac5b72..a766f81 100644 (file)
--- a/gcc/glimits.h
+++ b/gcc/glimits.h
@@ -9,9 +9,10 @@
 #undef CHAR_BIT
 #define CHAR_BIT 8
 
-/* No multibyte characters supported yet.  */
-#undef MB_LEN_MAX
+/* Maximum length of a multibyte character.  */
+#ifndef MB_LEN_MAX
 #define MB_LEN_MAX 1
+#endif
 
 /* Minimum and maximum values a `signed char' can hold.  */
 #undef SCHAR_MIN
@@ -38,7 +39,8 @@
 
 /* Minimum and maximum values a `signed short int' can hold.  */
 #undef SHRT_MIN
-#define SHRT_MIN (-32768)
+/* For the sake of 16 bit hosts, we may not use -32768 */
+#define SHRT_MIN (-32767-1)
 #undef SHRT_MAX
 #define SHRT_MAX 32767
 
@@ -47,36 +49,49 @@
 #define USHRT_MAX 65535
 
 /* Minimum and maximum values a `signed int' can hold.  */
+#ifndef __INT_MAX__
+#define __INT_MAX__ 2147483647
+#endif
 #undef INT_MIN
 #define INT_MIN (-INT_MAX-1)
 #undef INT_MAX
-#define INT_MAX 2147483647
+#define INT_MAX __INT_MAX__
 
 /* Maximum value an `unsigned int' can hold.  (Minimum is 0).  */
 #undef UINT_MAX
-#define UINT_MAX 4294967295U
+#define UINT_MAX (INT_MAX * 2U + 1)
 
 /* Minimum and maximum values a `signed long int' can hold.
    (Same as `int').  */
+#ifndef __LONG_MAX__
+#if defined (__alpha__) || (defined (_ARCH_PPC) && defined (__64BIT__)) || (defined (__sparc__) && defined(__arch64__)) || defined (__sparcv9)
+#define __LONG_MAX__ 9223372036854775807L
+#else
+#define __LONG_MAX__ 2147483647L
+#endif /* __alpha__ || sparc64 */
+#endif
 #undef LONG_MIN
 #define LONG_MIN (-LONG_MAX-1)
 #undef LONG_MAX
-#define LONG_MAX 2147483647L
+#define LONG_MAX __LONG_MAX__
 
 /* Maximum value an `unsigned long int' can hold.  (Minimum is 0).  */
 #undef ULONG_MAX
-#define ULONG_MAX 4294967295UL
+#define ULONG_MAX (LONG_MAX * 2UL + 1)
 
-#if !defined (__STRICT_ANSI__) || defined (_GNU_SOURCE)
+#if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__)
 /* Minimum and maximum values a `signed long long int' can hold.  */
+#ifndef __LONG_LONG_MAX__
+#define __LONG_LONG_MAX__ 9223372036854775807LL
+#endif
 #undef LONG_LONG_MIN
 #define LONG_LONG_MIN (-LONG_LONG_MAX-1)
 #undef LONG_LONG_MAX
-#define LONG_LONG_MAX 9223372036854775807LL
+#define LONG_LONG_MAX __LONG_LONG_MAX__
 
 /* Maximum value an `unsigned long long int' can hold.  (Minimum is 0).  */
 #undef ULONG_LONG_MAX
-#define ULONG_LONG_MAX 18446744073709551615ULL
+#define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1)
 #endif
 
 #endif /* _MACH_MACHLIMITS_H_ */