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:41

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:88

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