diff options
| -rw-r--r-- | lib/xstrtol.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/lib/xstrtol.c b/lib/xstrtol.c index ad2bcdbf1..29dc0773f 100644 --- a/lib/xstrtol.c +++ b/lib/xstrtol.c @@ -1,5 +1,5 @@ /* A more useful interface to strtol. - Copyright (C) 1995, 1996 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -46,12 +46,24 @@ extern int errno; # include <limits.h> #endif +#ifndef CHAR_BIT +# define CHAR_BIT 8 +#endif + +/* The extra casts work around common compiler bugs. */ +#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) +/* The outer cast is needed to work around a bug in Cray C 5.0.3.0. + It is necessary at least when t == time_t. */ +#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \ + ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0)) +#define TYPE_MAXIMUM(t) (~ (t) 0 - TYPE_MINIMUM (t)) + #ifndef ULONG_MAX -# define ULONG_MAX ((unsigned long) ~(unsigned long) 0) +# define ULONG_MAX TYPE_MAXIMUM (unsigned long int) #endif #ifndef LONG_MAX -# define LONG_MAX ((long int) (ULONG_MAX >> 1)) +# define LONG_MAX TYPE_MAXIMUM (long int) #endif #include "xstrtol.h" |