de/dbc/st__data__t_8h_source.html

#ifndef RBIMPL_ARITHMERIC_ST_DATA_T_H                /*-*-C++-*-vi:se ft=cpp:*/

#define RBIMPL_ARITHMERIC_ST_DATA_T_H

#include "ruby/internal/arithmetic/fixnum.h"

#include "ruby/internal/arithmetic/long.h"

#include "ruby/internal/attr/artificial.h"

#include "ruby/internal/attr/const.h"

#include "ruby/internal/attr/constexpr.h"

#include "ruby/internal/cast.h"

#include "ruby/internal/value.h"

#include "ruby/assert.h"

#include "ruby/st.h"


#define ST2FIX    RB_ST2FIX

#define RB_ST2FIX RB_ST2FIX

RBIMPL_ATTR_CONST_UNLESS_DEBUG()

RBIMPL_ATTR_CONSTEXPR_UNLESS_DEBUG(CXX14)

RBIMPL_ATTR_ARTIFICIAL()

static inline VALUE


RB_ST2FIX(st_data_t i)

{

    SIGNED_VALUE x = RBIMPL_CAST((SIGNED_VALUE)i);


    if (x >= 0) {

        x &= RUBY_FIXNUM_MAX;

    }

    else {

        x |= RUBY_FIXNUM_MIN;

    }


    RBIMPL_ASSERT_OR_ASSUME(RB_FIXABLE(x));

    unsigned long y = RBIMPL_CAST((unsigned long)x);

    return RB_LONG2FIX(RBIMPL_CAST((long)y));

}


#endif /* RBIMPL_ARITHMETIC_ST_DATA_T_H */

artificial.h
Defines RBIMPL_ATTR_ARTIFICIAL.

RBIMPL_ATTR_ARTIFICIAL
#define RBIMPL_ATTR_ARTIFICIAL()
Wraps (or simulates) __attribute__((artificial))
Definition artificial.h:43

assert.h

RBIMPL_ASSERT_OR_ASSUME
#define RBIMPL_ASSERT_OR_ASSUME(...)
This is either RUBY_ASSERT or RBIMPL_ASSUME, depending on RUBY_DEBUG.
Definition assert.h:311

const.h
Defines RBIMPL_ATTR_CONST.

RBIMPL_ATTR_CONST_UNLESS_DEBUG
#define RBIMPL_ATTR_CONST_UNLESS_DEBUG()
Enables RBIMPL_ATTR_CONST if and only if.
Definition const.h:41

constexpr.h
RBIMPL_ATTR_CONSTEXPR.

RBIMPL_ATTR_CONSTEXPR_UNLESS_DEBUG
#define RBIMPL_ATTR_CONSTEXPR_UNLESS_DEBUG(_)
Enables RBIMPL_ATTR_CONSTEXPR if and only if.
Definition constexpr.h:79

fixnum.h
Handling of integers formerly known as Fixnums.

RB_FIXABLE
#define RB_FIXABLE(_)
Checks if the passed value is in range of fixnum.
Definition fixnum.h:52

RUBY_FIXNUM_MAX
#define RUBY_FIXNUM_MAX
Maximum possible value that a fixnum can represent.
Definition fixnum.h:55

RUBY_FIXNUM_MIN
#define RUBY_FIXNUM_MIN
Minimum possible value that a fixnum can represent.
Definition fixnum.h:58

long.h
Arithmetic conversion between C's long and Ruby's.

RB_LONG2FIX
#define RB_LONG2FIX
Just another name of RB_INT2FIX.
Definition long.h:55

inline
#define inline
Old Visual Studio versions do not support the inline keyword, so we need to define it to be __inline.
Definition defines.h:91

RB_ST2FIX
static VALUE RB_ST2FIX(st_data_t i)
Converts a C's st_data_t into an instance of rb_cInteger.
Definition st_data_t.h:59

value.h
Defines VALUE and ID.

SIGNED_VALUE
intptr_t SIGNED_VALUE
A signed integer type that has the same width with VALUE.
Definition value.h:63

VALUE
uintptr_t VALUE
Type that represents a Ruby object.
Definition value.h:40