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Name	Size	Permission
arithmetic	[ DIR ]	drwxr-xr-x
attr	[ DIR ]	drwxr-xr-x
compiler_is	[ DIR ]	drwxr-xr-x
core	[ DIR ]	drwxr-xr-x
encoding	[ DIR ]	drwxr-xr-x
has	[ DIR ]	drwxr-xr-x
intern	[ DIR ]	drwxr-xr-x
abi.h	1.52 KB	-rw-r--r--
anyargs.h	36.38 KB	-rw-r--r--
arithmetic.h	2.07 KB	-rw-r--r--
assume.h	3.17 KB	-rw-r--r--
cast.h	2.28 KB	-rw-r--r--
compiler_is.h	2.06 KB	-rw-r--r--
compiler_since.h	2.72 KB	-rw-r--r--
config.h	4.82 KB	-rw-r--r--
constant_p.h	1.85 KB	-rw-r--r--
core.h	1.83 KB	-rw-r--r--
ctype.h	22.56 KB	-rw-r--r--
dllexport.h	4.05 KB	-rw-r--r--
dosish.h	3.16 KB	-rw-r--r--
error.h	20.24 KB	-rw-r--r--
eval.h	18.2 KB	-rw-r--r--
event.h	6.08 KB	-rw-r--r--
fl_type.h	34.07 KB	-rw-r--r--
gc.h	2.25 KB	-rw-r--r--
glob.h	4.98 KB	-rw-r--r--
globals.h	9.77 KB	-rw-r--r--
interpreter.h	9.46 KB	-rw-r--r--
iterator.h	18.19 KB	-rw-r--r--
memory.h	23.04 KB	-rw-r--r--
method.h	7.08 KB	-rw-r--r--
module.h	7.07 KB	-rw-r--r--
newobj.h	7.65 KB	-rw-r--r--
rgengc.h	13.2 KB	-rw-r--r--
scan_args.h	18.48 KB	-rw-r--r--
special_consts.h	11.9 KB	-rw-r--r--
static_assert.h	3.14 KB	-rw-r--r--
stdalign.h	4.58 KB	-rw-r--r--
stdbool.h	2.01 KB	-rw-r--r--
symbol.h	12.78 KB	-rw-r--r--
value.h	4.26 KB	-rw-r--r--
value_type.h	14.12 KB	-rw-r--r--
variable.h	11.81 KB	-rw-r--r--
warning_push.h	4.91 KB	-rw-r--r--
xmalloc.h	17.08 KB	-rw-r--r--

Code Editor : assume.h

#ifndef RBIMPL_ASSUME_H                              /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_ASSUME_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      Defines #RBIMPL_ASSUME / #RBIMPL_UNREACHABLE.
 *
 * These macros must be defined at once because:
 *
 * - #RBIMPL_ASSUME could fallback to #RBIMPL_UNREACHABLE.
 * - #RBIMPL_UNREACHABLE could fallback to #RBIMPL_ASSUME.
 */
#include "ruby/internal/config.h"
#include "ruby/internal/cast.h"
#include "ruby/internal/compiler_since.h"
#include "ruby/internal/has/builtin.h"
#include "ruby/internal/warning_push.h"

/** @cond INTERNAL_MACRO */
#if defined(HAVE___ASSUME)
# define RBIMPL_HAVE___ASSUME
#endif
/** @endcond */

/** Wraps (or simulates) `__builtin_unreachable`. */
#if RBIMPL_HAS_BUILTIN(__builtin_unreachable)
# define RBIMPL_UNREACHABLE_RETURN(_) __builtin_unreachable()

#elif defined(RBIMPL_HAVE___ASSUME)
# define RBIMPL_UNREACHABLE_RETURN(_) return (__assume(0), (_))

#else
# define RBIMPL_UNREACHABLE_RETURN(_) return (_)
#endif

/** Wraps (or simulates) `__builtin_unreachable`. */
#if RBIMPL_HAS_BUILTIN(__builtin_unreachable)
# define RBIMPL_UNREACHABLE __builtin_unreachable

#elif defined(RBIMPL_HAVE___ASSUME)
# define RBIMPL_UNREACHABLE() __assume(0)
#endif

/** Wraps (or simulates) `__assume`. */
#if RBIMPL_COMPILER_SINCE(Intel, 13, 0, 0)
# /* icc warnings are false positives.  Ignore them. */
# /* "warning #2261: __assume expression with side effects discarded" */
# define RBIMPL_ASSUME(expr)     \
    RBIMPL_WARNING_PUSH()        \
    RBIMPL_WARNING_IGNORED(2261) \
    __assume(expr)              \
    RBIMPL_WARNING_POP()

#elif defined(RBIMPL_HAVE___ASSUME)
# define RBIMPL_ASSUME __assume

#elif RBIMPL_HAS_BUILTIN(__builtin_assume)
# define RBIMPL_ASSUME __builtin_assume

#elif ! defined(RBIMPL_UNREACHABLE)
# define RBIMPL_ASSUME(_) RBIMPL_CAST((void)(_))

#else
# define RBIMPL_ASSUME(_) \
    (RB_LIKELY(!!(_)) ? RBIMPL_CAST((void)0) : RBIMPL_UNREACHABLE())
#endif

#if ! defined(RBIMPL_UNREACHABLE)
# define RBIMPL_UNREACHABLE() RBIMPL_ASSUME(0)
#endif

#endif /* RBIMPL_ASSUME_H */

${this.title}

Code Editor : assume.h