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//proc/thread-self/root/opt/alt/ruby30/include/ruby/internal/arithmetic/fixnum.h

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#ifndef RBIMPL_ARITHMETIC_FIXNUM_H                   /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_ARITHMETIC_FIXNUM_H
/**
 * @file
 * @author     Ruby developers <ruby-core@ruby-lang.org>
 * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
 *             Permission  is hereby  granted,  to  either redistribute  and/or
 *             modify this file, provided that  the conditions mentioned in the
 *             file COPYING are met.  Consult the file for details.
 * @warning    Symbols   prefixed  with   either  `RBIMPL`   or  `rbimpl`   are
 *             implementation details.   Don't take  them as canon.  They could
 *             rapidly appear then vanish.  The name (path) of this header file
 *             is also an  implementation detail.  Do not expect  it to persist
 *             at the place it is now.  Developers are free to move it anywhere
 *             anytime at will.
 * @note       To  ruby-core:  remember  that   this  header  can  be  possibly
 *             recursively included  from extension  libraries written  in C++.
 *             Do not  expect for  instance `__VA_ARGS__` is  always available.
 *             We assume C99  for ruby itself but we don't  assume languages of
 *             extension libraries. They could be written in C++98.
 * @brief      Handling of integers formerly known as Fixnums.
 */
#include "ruby/backward/2/limits.h"

#define FIXABLE    RB_FIXABLE
#define FIXNUM_MAX RUBY_FIXNUM_MAX
#define FIXNUM_MIN RUBY_FIXNUM_MIN
#define NEGFIXABLE RB_NEGFIXABLE
#define POSFIXABLE RB_POSFIXABLE

/*
 * FIXABLE can be applied to anything, from double to intmax_t.  The problem is
 * double.   On a  64bit system  RUBY_FIXNUM_MAX is  4,611,686,018,427,387,903,
 * which is not representable by a double.  The nearest value that a double can
 * represent  is   4,611,686,018,427,387,904,  which   is  not   fixable.   The
 * seemingly-stragne "< FIXNUM_MAX + 1" expression below is due to this.
 */
#define RB_POSFIXABLE(_) ((_) <  RUBY_FIXNUM_MAX + 1)
#define RB_NEGFIXABLE(_) ((_) >= RUBY_FIXNUM_MIN)
#define RB_FIXABLE(_)    (RB_POSFIXABLE(_) && RB_NEGFIXABLE(_))
#define RUBY_FIXNUM_MAX  (LONG_MAX / 2)
#define RUBY_FIXNUM_MIN  (LONG_MIN / 2)

#endif /* RBIMPL_ARITHMETIC_FIXNUM_H */

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Name	Size	Perms	Modified	Actions
char.h	2.29 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
double.h	1.79 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
fixnum.h	2.22 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
gid_t.h	1.57 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
int.h	4.46 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
intptr_t.h	1.79 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
long.h	7.26 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
long_long.h	2.12 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
mode_t.h	1.58 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
off_t.h	2.00 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
pid_t.h	1.57 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
short.h	2.19 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
size_t.h	2.27 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
st_data_t.h	2.28 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive
uid_t.h	1.57 KB	lrw-r--r--	2024-06-26 13:55:16	Edit Download recursive recursive

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