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#ifndef RBIMPL_VALUE_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_VALUE_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 ::VALUE and ::ID. */ #include "ruby/internal/static_assert.h" #include "ruby/backward/2/long_long.h" #include "ruby/backward/2/limits.h" #if defined HAVE_UINTPTR_T && 0 typedef uintptr_t VALUE; typedef uintptr_t ID; # define SIGNED_VALUE intptr_t # define SIZEOF_VALUE SIZEOF_UINTPTR_T # undef PRI_VALUE_PREFIX # define RBIMPL_VALUE_NULL UINTPTR_C(0) # define RBIMPL_VALUE_ONE UINTPTR_C(1) # define RBIMPL_VALUE_FULL UINTPTR_MAX #elif SIZEOF_LONG == SIZEOF_VOIDP typedef unsigned long VALUE; typedef unsigned long ID; # define SIGNED_VALUE long # define SIZEOF_VALUE SIZEOF_LONG # define PRI_VALUE_PREFIX "l" # define RBIMPL_VALUE_NULL 0UL # define RBIMPL_VALUE_ONE 1UL # define RBIMPL_VALUE_FULL ULONG_MAX #elif SIZEOF_LONG_LONG == SIZEOF_VOIDP typedef unsigned LONG_LONG VALUE; typedef unsigned LONG_LONG ID; # define SIGNED_VALUE LONG_LONG # define LONG_LONG_VALUE 1 # define SIZEOF_VALUE SIZEOF_LONG_LONG # define PRI_VALUE_PREFIX PRI_LL_PREFIX # define RBIMPL_VALUE_NULL 0ULL # define RBIMPL_VALUE_ONE 1ULL # define RBIMPL_VALUE_FULL ULLONG_MAX #else # error ---->> ruby requires sizeof(void*) == sizeof(long) or sizeof(LONG_LONG) to be compiled. <<---- #endif RBIMPL_STATIC_ASSERT(sizeof_int, SIZEOF_INT == sizeof(int)); RBIMPL_STATIC_ASSERT(sizeof_long, SIZEOF_LONG == sizeof(long)); RBIMPL_STATIC_ASSERT(sizeof_long_long, SIZEOF_LONG_LONG == sizeof(LONG_LONG)); RBIMPL_STATIC_ASSERT(sizeof_voidp, SIZEOF_VOIDP == sizeof(void *)); #endif /* RBIMPL_VALUE_H */