Ruby 3.2.3p157 (2024-01-18 revision 52bb2ac0a6971d0391efa2275f7a66bff319087c)
assume.h
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1#ifndef RUBY_BACKWARD2_ASSUME_H /*-*-C++-*-vi:se ft=cpp:*/
2#define RUBY_BACKWARD2_ASSUME_H
23#include "ruby/internal/config.h"
26
27#define ASSUME RBIMPL_ASSUME
28#define UNREACHABLE RBIMPL_UNREACHABLE()
29#define UNREACHABLE_RETURN RBIMPL_UNREACHABLE_RETURN
31/* likely */
32#if RBIMPL_HAS_BUILTIN(__builtin_expect)
43# define RB_LIKELY(x) (__builtin_expect(!!(x), 1))
44
50# define RB_UNLIKELY(x) (__builtin_expect(!!(x), 0))
51#else
52# define RB_LIKELY(x) (x)
53# define RB_UNLIKELY(x) (x)
54#endif
55
56#endif /* RUBY_BACKWARD2_ASSUME_H */
Defines RBIMPL_HAS_BUILTIN.
Defines RBIMPL_ASSUME / RBIMPL_UNREACHABLE.