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Diffstat (limited to 'include/ruby/internal/arithmetic/off_t.h')
| -rw-r--r-- | include/ruby/internal/arithmetic/off_t.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/ruby/internal/arithmetic/off_t.h b/include/ruby/internal/arithmetic/off_t.h new file mode 100644 index 0000000000..0ec9362cc9 --- /dev/null +++ b/include/ruby/internal/arithmetic/off_t.h @@ -0,0 +1,62 @@ +#ifndef RBIMPL_ARITHMETIC_OFF_T_H /*-*-C++-*-vi:se ft=cpp:*/ +#define RBIMPL_ARITHMETIC_OFF_T_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 Arithmetic conversion between C's `off_t` and Ruby's. + */ +#include "ruby/internal/config.h" +#include "ruby/internal/arithmetic/int.h" +#include "ruby/internal/arithmetic/long.h" +#include "ruby/internal/arithmetic/long_long.h" +#include "ruby/backward/2/long_long.h" + +/** Converts a C's `off_t` into an instance of ::rb_cInteger. */ +#ifdef OFFT2NUM +# /* take that. */ +#elif SIZEOF_OFF_T == SIZEOF_LONG_LONG +# define OFFT2NUM RB_LL2NUM +#elif SIZEOF_OFF_T == SIZEOF_LONG +# define OFFT2NUM RB_LONG2NUM +#else +# define OFFT2NUM RB_INT2NUM +#endif + +/** Converts an instance of ::rb_cNumeric into C's `off_t`. */ +#ifdef NUM2OFFT +# /* take that. */ +#elif SIZEOF_OFF_T == SIZEOF_LONG_LONG +# define NUM2OFFT RB_NUM2LL +#elif SIZEOF_OFF_T == SIZEOF_LONG +# define NUM2OFFT RB_NUM2LONG +#else +# define NUM2OFFT RB_NUM2INT +#endif + +/** A rb_sprintf() format prefix to be used for an `off_t` parameter. */ +#ifdef PRI_OFFT_PREFIX +# /* take that. */ +#elif SIZEOF_OFF_T == SIZEOF_LONG_LONG +# define PRI_OFFT_PREFIX PRI_LL_PREFIX +#elif SIZEOF_OFF_T == SIZEOF_LONG +# define PRI_OFFT_PREFIX PRI_LONG_PREFIX +#else +# define PRI_OFFT_PREFIX PRI_INT_PREFIX +#endif + +#endif /* RBIMPL_ARITHMETIC_OFF_T_H */ |