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long_long.h
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#ifndef RUBY_BACKWARD2_LONG_LONG_H /*-*-C++-*-vi:se ft=cpp:*/ #define RUBY_BACKWARD2_LONG_LONG_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 old #LONG_LONG * * No known compiler that can compile today's ruby lacks long long. * Historically MSVC was one of such compiler, but it implemented long long a * while ago (some time back in 2013). The macros are for backwards * compatibility only. */ #include "ruby/internal/config.h" #include "ruby/internal/has/warning.h" #include "ruby/internal/warning_push.h" #if defined(__DOXYGEN__) # /** @cond INTERNAL_MACRO */ # define HAVE_LONG_LONG 1 # define HAVE_TRUE_LONG_LONG 1 # /** @endcond */ # /** @deprecated Just use `long long` directly. */ # define LONG_LONG long long. #elif RBIMPL_HAS_WARNING("-Wc++11-long-long") # define HAVE_TRUE_LONG_LONG 1 # define LONG_LONG \ RBIMPL_WARNING_PUSH() \ RBIMPL_WARNING_IGNORED(-Wc++11-long-long) \ long long \ RBIMPL_WARNING_POP() #elif RBIMPL_HAS_WARNING("-Wlong-long") # define HAVE_TRUE_LONG_LONG 1 # define LONG_LONG \ RBIMPL_WARNING_PUSH() \ RBIMPL_WARNING_IGNORED(-Wlong-long) \ long long \ RBIMPL_WARNING_POP() #elif defined(HAVE_LONG_LONG) # define HAVE_TRUE_LONG_LONG 1 # define LONG_LONG long long #elif SIZEOF___INT64 > 0 # define HAVE_LONG_LONG 1 # define LONG_LONG __int64 # undef SIZEOF_LONG_LONG # define SIZEOF_LONG_LONG SIZEOF___INT64 #else # error Hello! Ruby developers believe this message must not happen. # error If you encounter this message, can you file a bug report? # error Remember to attach a detailed description of your environment. # error Thank you! #endif #endif /* RBIMPL_BACKWARD2_LONG_LONG_H */