limits.h

#ifndef RUBY_BACKWARD2_LIMITS_H                      /*-*-C++-*-vi:se ft=cpp:*/
#define RUBY_BACKWARD2_LIMITS_H
#include "ruby/internal/config.h"
 
#ifdef HAVE_LIMITS_H
# include <limits.h>
#endif
 
#include "ruby/backward/2/long_long.h"
 
#ifndef LONG_MAX
# /* assuming 32bit(2's complement) long */
# define LONG_MAX 2147483647L
#endif
 
#ifndef LONG_MIN
# define LONG_MIN (-LONG_MAX-1)
#endif
 
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
 
#ifdef LLONG_MAX
# /* Take that. */
#elif defined(LONG_LONG_MAX)
# define LLONG_MAX  LONG_LONG_MAX
#elif defined(_I64_MAX)
# define LLONG_MAX _I64_MAX
#else
# /* assuming 64bit(2's complement) long long */
# define LLONG_MAX 9223372036854775807LL
#endif
 
#ifdef LLONG_MIN
# /* Take that. */
#elif defined(LONG_LONG_MIN)
# define LLONG_MIN  LONG_LONG_MIN
#elif defined(_I64_MAX)
# define LLONG_MIN _I64_MIN
#else
# define LLONG_MIN (-LLONG_MAX-1)
#endif
 
#ifdef SIZE_MAX
# /* Take that. */
#elif SIZEOF_SIZE_T == SIZEOF_LONG_LONG
# define SIZE_MAX ULLONG_MAX
# define SIZE_MIN ULLONG_MIN
#elif SIZEOF_SIZE_T == SIZEOF_LONG
# define SIZE_MAX ULONG_MAX
# define SIZE_MIN ULONG_MIN
#elif SIZEOF_SIZE_T == SIZEOF_INT
# define SIZE_MAX UINT_MAX
# define SIZE_MIN UINT_MIN
#else
# define SIZE_MAX USHRT_MAX
# define SIZE_MIN USHRT_MIN
#endif
 
#ifdef SSIZE_MAX
# /* Take that. */
#elif SIZEOF_SIZE_T == SIZEOF_LONG_LONG
# define SSIZE_MAX LLONG_MAX
# define SSIZE_MIN LLONG_MIN
#elif SIZEOF_SIZE_T == SIZEOF_LONG
# define SSIZE_MAX LONG_MAX
# define SSIZE_MIN LONG_MIN
#elif SIZEOF_SIZE_T == SIZEOF_INT
# define SSIZE_MAX INT_MAX
# define SSIZE_MIN INT_MIN
#else
# define SSIZE_MAX SHRT_MAX
# define SSIZE_MIN SHRT_MIN
#endif
 
#endif /* RUBY_BACKWARD2_LIMITS_H */