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| author | Alain Magloire <alainm@rcsm.ee.mcgill.ca> | 2000-01-17 00:55:06 +0000 |
|---|---|---|
| committer | Alain Magloire <alainm@rcsm.ee.mcgill.ca> | 2000-01-17 00:55:06 +0000 |
| commit | c5b5567e5d265cb8d7171e7d2add249bfefbf685 (patch) | |
| tree | 24b7402a0dc2771b86cdfa9344f771da3ad4cf64 /src/system.h | |
| parent | b889cf3d9b14aafcc10f958b0e568334f7293991 (diff) | |
| download | grep-c5b5567e5d265cb8d7171e7d2add249bfefbf685.tar.gz | |
ChangeLog NEWS THANKS doc/grep.1 doc/grep.texi src/grep.c
src/system.h
Support for general option --binary-file from David O'Brien.
Inititial patch from David O'Brien.
Add --binary-files option.
* NEWS, doc/grep.1, doc/grep.texi: Document it.
* src/grep.c (BINARY_FILES_OPTION): New constant.
(long_options, grep, usage, main): New --binary-files option.
(binary_files): New var.
* src/system.h (TYPE_SIGNED, TYPE_MINIMUM, TYPE_MAXIMUM, CHAR_MAX):
New macros.
(INT_MAX, UCHAR_MAX): Define in terms of TYPE_MAXIMUM.
Diffstat (limited to 'src/system.h')
| -rw-r--r-- | src/system.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/system.h b/src/system.h index a6966e47..3cd9b567 100644 --- a/src/system.h +++ b/src/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) |