d9/d6e/double_8h_source.html

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

#define RBIMPL_ARITHMETIC_DOUBLE_H

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

#include "ruby/internal/dllexport.h"

#include "ruby/internal/value.h"


#define NUM2DBL      rb_num2dbl

#define RFLOAT_VALUE rb_float_value

#define DBL2NUM      rb_float_new


RBIMPL_SYMBOL_EXPORT_BEGIN()

double rb_num2dbl(VALUE num);


RBIMPL_ATTR_PURE()

double rb_float_value(VALUE num);


VALUE rb_float_new(double d);


VALUE rb_float_new_in_heap(double d);

RBIMPL_SYMBOL_EXPORT_END()


#endif /* RBIMPL_ARITHMETIC_DOUBLE_H */

dllexport.h
Tweaking visibility of C variables/functions.

RBIMPL_SYMBOL_EXPORT_END
#define RBIMPL_SYMBOL_EXPORT_END()
Counterpart of RBIMPL_SYMBOL_EXPORT_BEGIN.
Definition dllexport.h:74

RBIMPL_SYMBOL_EXPORT_BEGIN
#define RBIMPL_SYMBOL_EXPORT_BEGIN()
Shortcut macro equivalent to RUBY_SYMBOL_EXPORT_BEGIN extern "C" {.
Definition dllexport.h:65

rb_float_value
double rb_float_value(VALUE num)
Extracts its double value from an instance of rb_cFloat.
Definition numeric.c:6688

rb_float_new_in_heap
VALUE rb_float_new_in_heap(double d)
Identical to rb_float_new(), except it does not generate Flonums.
Definition numeric.c:910

rb_float_new
VALUE rb_float_new(double d)
Converts a C's double into an instance of rb_cFloat.
Definition numeric.c:6695

rb_num2dbl
double rb_num2dbl(VALUE num)
Converts an instance of rb_cNumeric into C's double.
Definition object.c:3829

pure.h
Defines RBIMPL_ATTR_PURE.

RBIMPL_ATTR_PURE
#define RBIMPL_ATTR_PURE()
Wraps (or simulates) __attribute__((pure)).
Definition pure.h:33

value.h
Defines VALUE and ID.

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