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:6518

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:991

rb_float_new
VALUE rb_float_new(double d)
Converts a C's double into an instance of rb_cFloat.
Definition: numeric.c:6525

rb_num2dbl
double rb_num2dbl(VALUE num)
Converts an instance of rb_cNumeric into C's double.
Definition: object.c:3686

RBIMPL_ATTR_PURE
RBIMPL_ATTR_PURE() int rb_io_read_pending(rb_io_t *fptr)
Queries if the passed IO has any pending reads.

pure.h
Defines RBIMPL_ATTR_PURE.

value.h
Defines VALUE and ID.

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