(892c46283a5ea4179500d951c9d4866c0051f27b)

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

#include "ruby/internal/config.h"
#include "ruby/internal/arithmetic/fixnum.h"
#include "ruby/internal/arithmetic/intptr_t.h"
#include "ruby/internal/assume.h"
#include "ruby/internal/attr/artificial.h"
#include "ruby/internal/attr/cold.h"
#include "ruby/internal/attr/const.h"
#include "ruby/internal/attr/constexpr.h"
#include "ruby/internal/attr/noreturn.h"
#include "ruby/internal/cast.h"
#include "ruby/internal/dllexport.h"
#include "ruby/internal/special_consts.h"
#include "ruby/internal/value.h"
#include "ruby/assert.h"

Include dependency graph for long.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	FIX2LONG RB_FIX2LONG
	Old name of RB_FIX2LONG. More...

#define	FIX2ULONG RB_FIX2ULONG
	Old name of RB_FIX2ULONG. More...

#define	INT2FIX RB_INT2FIX
	Old name of RB_INT2FIX. More...

#define	LONG2FIX RB_INT2FIX
	Old name of RB_INT2FIX. More...

#define	LONG2NUM RB_LONG2NUM
	Old name of RB_LONG2NUM. More...

#define	NUM2LONG RB_NUM2LONG
	Old name of RB_NUM2LONG. More...

#define	NUM2ULONG RB_NUM2ULONG
	Old name of RB_NUM2ULONG. More...

#define	RB_FIX2LONG rb_fix2long
	Just another name of rb_fix2long. More...

#define	RB_FIX2ULONG rb_fix2ulong
	Just another name of rb_fix2ulong. More...

#define	RB_LONG2FIX RB_INT2FIX
	Just another name of RB_INT2FIX. More...

#define	RB_LONG2NUM rb_long2num_inline
	Just another name of rb_long2num_inline. More...

#define	RB_NUM2LONG rb_num2long_inline
	Just another name of rb_num2long_inline. More...

#define	RB_NUM2ULONG rb_num2ulong_inline
	Just another name of rb_num2ulong_inline. More...

#define	RB_ULONG2NUM rb_ulong2num_inline
	Just another name of rb_ulong2num_inline. More...

#define	ULONG2NUM RB_ULONG2NUM
	Old name of RB_ULONG2NUM. More...

#define	rb_fix_new RB_INT2FIX
	Just another name of RB_INT2FIX. More...

#define	rb_long2int rb_long2int_inline
	Just another name of rb_long2int_inline. More...

Functions
void	rb_out_of_int (SIGNED_VALUE num)
	This is an utility function to raise an rb_eRangeError. More...

long	rb_num2long (VALUE num)
	Converts an instance of rb_cNumeric into C's `long`. More...

unsigned long	rb_num2ulong (VALUE num)
	Converts an instance of rb_cNumeric into C's `unsigned long`. More...

static VALUE	RB_INT2FIX (long i)
	Converts a C's `long` into an instance of rb_cInteger. More...

static int	rb_long2int_inline (long n)
	Checks if `int` can hold the given integer. More...

static long	rb_fix2long (VALUE x)
	Converts a Fixnum into C's `long`. More...

static unsigned long	rb_fix2ulong (VALUE x)
	Converts a Fixnum into C's `unsigned long`. More...

static long	rb_num2long_inline (VALUE x)
	Converts an instance of rb_cNumeric into C's `long`. More...

static unsigned long	rb_num2ulong_inline (VALUE x)
	Converts an instance of rb_cNumeric into C's `unsigned long`. More...

static VALUE	rb_long2num_inline (long v)
	Converts a C's `long` into an instance of rb_cInteger. More...

static VALUE	rb_ulong2num_inline (unsigned long v)
	Converts a C's `unsigned long` into an instance of rb_cInteger. More...

Detailed Description

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

Author: Ruby developers ruby-.nosp@m.core.nosp@m.@ruby.nosp@m.-lan.nosp@m.g.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.

Q&A

Q: Why are INT2FIX etc. here, not in int.h?
A: Because they are in fact handling long. It seems someone did not understand the difference of int and long when they designed those macros.

Definition in file long.h.

Macro Definition Documentation

◆ RB_FIX2LONG

#define RB_FIX2LONG rb_fix2long

Just another name of rb_fix2long.

Definition at line 53 of file long.h.

◆ RB_FIX2ULONG

#define RB_FIX2ULONG rb_fix2ulong

Just another name of rb_fix2ulong.

Definition at line 54 of file long.h.

◆ rb_fix_new

#define rb_fix_new RB_INT2FIX

Just another name of RB_INT2FIX.

Definition at line 61 of file long.h.

◆ RB_LONG2FIX

#define RB_LONG2FIX RB_INT2FIX

Just another name of RB_INT2FIX.

Definition at line 55 of file long.h.

◆ rb_long2int

#define rb_long2int rb_long2int_inline

Just another name of rb_long2int_inline.

Definition at line 62 of file long.h.

◆ RB_LONG2NUM

#define RB_LONG2NUM rb_long2num_inline

Just another name of rb_long2num_inline.

Definition at line 56 of file long.h.

◆ RB_NUM2LONG

#define RB_NUM2LONG rb_num2long_inline

Just another name of rb_num2long_inline.

Definition at line 57 of file long.h.

◆ RB_NUM2ULONG

#define RB_NUM2ULONG rb_num2ulong_inline

Just another name of rb_num2ulong_inline.

Definition at line 58 of file long.h.

◆ RB_ULONG2NUM

#define RB_ULONG2NUM rb_ulong2num_inline

Just another name of rb_ulong2num_inline.

Definition at line 59 of file long.h.

Function Documentation

◆ rb_fix2long()

static long rb_fix2long ( VALUE x )

inlinestatic

Converts a Fixnum into C's long.

Parameters

[in] x Some Fixnum.

Precondition: Must not pass anything other than a Fixnum.

Returns: The passed value converted into C's long.

Definition at line 231 of file long.h.

Referenced by rb_fix2ulong().

◆ rb_fix2ulong()

static unsigned long rb_fix2ulong ( VALUE x )

inlinestatic

Converts a Fixnum into C's unsigned long.

Parameters

[in] x Some Fixnum.

Precondition: Must not pass anything other than a Fixnum.

Returns: The passed value converted into C's unsigned long.

Note: Negative fixnums will be converted into large unsigned longs.

Definition at line 252 of file long.h.

◆ RB_INT2FIX()

static VALUE RB_INT2FIX ( long i )

inlinestatic

Converts a C's long into an instance of rb_cInteger.

Parameters

[in] i Arbitrary long value.

Returns: An instance of rb_cInteger.

Definition at line 111 of file long.h.

Referenced by RB_CHR2FIX(), and rb_int2num_inline().

◆ rb_long2int_inline()

static int rb_long2int_inline ( long n )

inlinestatic

Checks if int can hold the given integer.

Parameters

[in] n Arbitrary long value.

Exceptions

rb_eRangeError n is out of range of int.

Returns: Identical value of type int

Definition at line 135 of file long.h.

◆ rb_long2num_inline()

static VALUE rb_long2num_inline ( long v )

inlinestatic

Converts a C's long into an instance of rb_cInteger.

Parameters

[in] v Arbitrary long value.

Returns: An instance of rb_cInteger.

Definition at line 308 of file long.h.

◆ rb_num2long()

long rb_num2long ( VALUE num )

Converts an instance of rb_cNumeric into C's long.

Parameters

[in] num Something numeric.

Exceptions

rb_eTypeError	`num` is not a numeric.
rb_eRangeError	`num` is out of range of `long`.

Returns: The passed value converted into C's long.

Definition at line 3196 of file numeric.c.

Referenced by rb_fix2short(), rb_num2fix(), rb_num2int(), rb_num2long_inline(), and rb_num2short().

◆ rb_num2long_inline()

static long rb_num2long_inline ( VALUE x )

inlinestatic

Converts an instance of rb_cNumeric into C's long.

Parameters

[in] x Something numeric.

Exceptions

rb_eTypeError	`x` is not a numeric.
rb_eRangeError	`x` is out of range of `long`.

Returns: The passed value converted into C's long.

Definition at line 267 of file long.h.

◆ rb_num2ulong()

unsigned long rb_num2ulong ( VALUE num )

Converts an instance of rb_cNumeric into C's unsigned long.

Parameters

[in] num Something numeric.

Exceptions

rb_eTypeError	`num` is not a numeric.
rb_eRangeError	`num` is out of range of `unsigned long`.

Returns: The passed value converted into C's unsigned long.

Definition at line 3265 of file numeric.c.

Referenced by rb_num2uint(), and rb_num2ulong_inline().

◆ rb_num2ulong_inline()

static unsigned long rb_num2ulong_inline ( VALUE x )

inlinestatic

Converts an instance of rb_cNumeric into C's unsigned long.

Parameters

[in] x Something numeric.

Exceptions

rb_eTypeError	`x` is not a numeric.
rb_eRangeError	`x` is out of range of `unsigned long`.

Returns: The passed value converted into C's unsigned long.

Definition at line 293 of file long.h.

◆ rb_out_of_int()

void rb_out_of_int ( SIGNED_VALUE num )

This is an utility function to raise an rb_eRangeError.

Parameters

[in] num A signed value about to overflow.

Exceptions

rb_eRangeError num is out of range of int.

Definition at line 3271 of file numeric.c.

Referenced by rb_long2int_inline().

◆ rb_ulong2num_inline()

static VALUE rb_ulong2num_inline ( unsigned long v )

inlinestatic

Converts a C's unsigned long into an instance of rb_cInteger.

Parameters

[in] v Arbitrary unsigned long value.

Returns: An instance of rb_cInteger.

Definition at line 323 of file long.h.

(892c46283a5ea4179500d951c9d4866c0051f27b)

Macros

Functions

Detailed Description

Q&A

Macro Definition Documentation

◆ RB_FIX2LONG

◆ RB_FIX2ULONG

◆ rb_fix_new

◆ RB_LONG2FIX

◆ rb_long2int

◆ RB_LONG2NUM

◆ RB_NUM2LONG

◆ RB_NUM2ULONG

◆ RB_ULONG2NUM

Function Documentation

◆ rb_fix2long()

◆ rb_fix2ulong()

◆ RB_INT2FIX()

◆ rb_long2int_inline()

◆ rb_long2num_inline()

◆ rb_num2long()

◆ rb_num2long_inline()

◆ rb_num2ulong()

◆ rb_num2ulong_inline()

◆ rb_out_of_int()

◆ rb_ulong2num_inline()