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File Content: `rbignum.h`

#ifndef RBIMPL_RBIGNUM_H                             /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_RBIGNUM_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      Routines to manipulate struct RBignum.
 * @note       The struct RBignum itself is opaque.
 */
#include "ruby/internal/dllexport.h"
#include "ruby/internal/value.h"
#include "ruby/internal/value_type.h"
#include "ruby/internal/stdbool.h"

#define RBIGNUM_SIGN rb_big_sign /**< @alias{rb_big_sign} */

/** @cond INTERNAL_MACRO */
#define RBIGNUM_POSITIVE_P RBIGNUM_POSITIVE_P
#define RBIGNUM_NEGATIVE_P RBIGNUM_NEGATIVE_P
/** @endcond */

RBIMPL_SYMBOL_EXPORT_BEGIN()
/**
 * The "sign" of a bignum.
 *
 * @param[in]  num  An object of RBignum.
 * @retval     1    It is greater than or equal to zero.
 * @retval     0    It is less than zero.
 *
 * @internal
 *
 * Implementation wise, unlike fixnums (which  are 2's complement), bignums are
 * signed  magnitude  system.   Theoretically  it could  be  possible  to  have
 * negative zero  instances.  But  in reality  there is no  way to  create such
 * thing.  Nobody ever needed that kind of insanity.
 */
int rb_big_sign(VALUE num);
RBIMPL_SYMBOL_EXPORT_END()

/**
 * Checks if the bignum is positive.
 * @param[in]  b      An object of RBignum.
 * @retval     false  `b` is less than zero.
 * @retval     true   Otherwise.
 */
static inline bool
RBIGNUM_POSITIVE_P(VALUE b)
{
    RBIMPL_ASSERT_TYPE(b, RUBY_T_BIGNUM);
    return RBIGNUM_SIGN(b);
}

/**
 * Checks if the bignum is negative.
 * @param[in]  b      An object of RBignum.
 * @retval     true   `b` is less than zero.
 * @retval     false  Otherwise.
 */
static inline bool
RBIGNUM_NEGATIVE_P(VALUE b)
{
    RBIMPL_ASSERT_TYPE(b, RUBY_T_BIGNUM);
    return ! RBIGNUM_POSITIVE_P(b);
}

#endif /* RBIMPL_RBIGNUM_H */

Name	Size	Permission
rarray.h	13540 bytes	0644
rbasic.h	5508 bytes	0644
rbignum.h	2949 bytes	0644
rclass.h	3534 bytes	0644
rdata.h	14201 bytes	0644
rfile.h	2134 bytes	0644
rhash.h	4536 bytes	0644
rmatch.h	5442 bytes	0644
robject.h	5156 bytes	0644
rregexp.h	5634 bytes	0644
rstring.h	15959 bytes	0644
rstruct.h	4203 bytes	0644
rtypeddata.h	23337 bytes	0644

File Content: rbignum.h

File Content: `rbignum.h`