diff options
Diffstat (limited to 'gnu/usr.bin/grep/system.h')
| -rw-r--r-- | gnu/usr.bin/grep/system.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gnu/usr.bin/grep/system.h b/gnu/usr.bin/grep/system.h index a6966e4..3cd9b56 100644 --- a/gnu/usr.bin/grep/system.h +++ b/gnu/usr.bin/grep/system.h @@ -127,11 +127,20 @@ void free(); #ifndef CHAR_BIT # define CHAR_BIT 8 #endif +/* The extra casts work around common compiler bugs. */ +#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) +#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \ + ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \ + : (t) 0)) +#define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t))) +#ifndef CHAR_MAX +# define CHAR_MAX TYPE_MAXIMUM (char) +#endif #ifndef INT_MAX -# define INT_MAX 2147483647 +# define INT_MAX TYPE_MAXIMUM (int) #endif #ifndef UCHAR_MAX -# define UCHAR_MAX 255 +# define UCHAR_MAX TYPE_MAXIMUM (unsigned char) #endif #if !defined(STDC_HEADERS) && defined(HAVE_STRING_H) && defined(HAVE_MEMORY_H) |
