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편집 파일: short.h

#ifndef RBIMPL_ARITHMETIC_SHORT_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_ARITHMETIC_SHORT_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 `short` and Ruby's. * * Shyouhei wonders: why there is no SHORT2NUM, given there are both * #USHORT2NUM and #CHR2FIX? */ #include "ruby/internal/value.h" #include "ruby/internal/dllexport.h" #include "ruby/internal/special_consts.h" #define RB_NUM2SHORT rb_num2short_inline /**< @alias{rb_num2short_inline} */ #define RB_NUM2USHORT rb_num2ushort /**< @alias{rb_num2ushort} */ #define NUM2SHORT RB_NUM2SHORT /**< @old{RB_NUM2SHORT} */ #define NUM2USHORT RB_NUM2USHORT /**< @old{RB_NUM2USHORT} */ #define USHORT2NUM RB_INT2FIX /**< @old{RB_INT2FIX} */ #define RB_FIX2SHORT rb_fix2short /**< @alias{rb_fix2ushort} */ #define FIX2SHORT RB_FIX2SHORT /**< @old{RB_FIX2SHORT} */ RBIMPL_SYMBOL_EXPORT_BEGIN() /** * Converts an instance of ::rb_cNumeric into C's `short`. * * @param[in] num Something numeric. * @exception rb_eTypeError `num` is not a numeric. * @exception rb_eRangeError `num` is out of range of `short`. * @return The passed value converted into C's `short`. */ short rb_num2short(VALUE num); /** * Converts an instance of ::rb_cNumeric into C's `unsigned short`. * * @param[in] num Something numeric. * @exception rb_eTypeError `num` is not a numeric. * @exception rb_eRangeError `num` is out of range of `unsigned short`. * @return The passed value converted into C's `unsigned short`. */ unsigned short rb_num2ushort(VALUE num); /** * Identical to rb_num2short(). * * @param[in] num Something numeric. * @exception rb_eTypeError `num` is not a numeric. * @exception rb_eRangeError `num` is out of range of `short`. * @return The passed value converted into C's `short`. * * @internal * * This function seems to be a complete waste of disk space. @shyouhei has no * idea why this is a different thing from rb_num2short(). */ short rb_fix2short(VALUE num); /** * Identical to rb_num2ushort(). * * @param[in] num Something numeric. * @exception rb_eTypeError `num` is not a numeric. * @exception rb_eRangeError `num` is out of range of `unsigned short`. * @return The passed value converted into C's `unsigned short`. * * @internal * * This function seems to be a complete waste of disk space. @shyouhei has no * idea why this is a different thing from rb_num2ushort(). */ unsigned short rb_fix2ushort(VALUE num); RBIMPL_SYMBOL_EXPORT_END() /** * Identical to rb_num2short(). * * @param[in] x Something numeric. * @exception rb_eTypeError `x` is not a numeric. * @exception rb_eRangeError `x` is out of range of `short`. * @return The passed value converted into C's `short`. * * @internal * * This function seems to be a complete waste of time. @shyouhei has no idea * why this is a different thing from rb_num2short(). */ static inline short rb_num2short_inline(VALUE x) { if (RB_FIXNUM_P(x)) return rb_fix2short(x); else return rb_num2short(x); } #endif /* RBIMPL_ARITHMETIC_SHORT_H */