(0989400a925cd201defdca9eb28eb87200b30785)
Handling of integers formerly known as Fixnums. More...
#include "ruby/backward/2/limits.h"
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Macros | |
| #define | FIXABLE RB_FIXABLE |
| Old name of RB_FIXABLE. More... | |
| #define | FIXNUM_MAX RUBY_FIXNUM_MAX |
| Old name of RUBY_FIXNUM_MAX. More... | |
| #define | FIXNUM_MIN RUBY_FIXNUM_MIN |
| Old name of RUBY_FIXNUM_MIN. More... | |
| #define | NEGFIXABLE RB_NEGFIXABLE |
| Old name of RB_NEGFIXABLE. More... | |
| #define | POSFIXABLE RB_POSFIXABLE |
| Old name of RB_POSFIXABLE. More... | |
| #define | RB_POSFIXABLE(_) ((_) < RUBY_FIXNUM_MAX + 1) |
| Checks if the passed value is in range of fixnum, assuming it is a positive number. More... | |
| #define | RB_NEGFIXABLE(_) ((_) >= RUBY_FIXNUM_MIN) |
| Checks if the passed value is in range of fixnum, assuming it is a negative number. More... | |
| #define | RB_FIXABLE(_) (RB_POSFIXABLE(_) && RB_NEGFIXABLE(_)) |
| Checks if the passed value is in range of fixnum. More... | |
| #define | RUBY_FIXNUM_MAX (LONG_MAX / 2) |
| Maximum possible value that a fixnum can represent. More... | |
| #define | RUBY_FIXNUM_MIN (LONG_MIN / 2) |
| Minimum possible value that a fixnum can represent. More... | |
Detailed Description
Handling of integers formerly known as Fixnums.
- 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
RBIMPLorrbimplare 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.
Definition in file fixnum.h.
Macro Definition Documentation
◆ RB_FIXABLE
| #define RB_FIXABLE | ( | _ | ) | (RB_POSFIXABLE(_) && RB_NEGFIXABLE(_)) |
◆ RB_NEGFIXABLE
| #define RB_NEGFIXABLE | ( | _ | ) | ((_) >= RUBY_FIXNUM_MIN) |
Checks if the passed value is in range of fixnum, assuming it is a negative number.
This is an implementation of RB_FIXABLE. Rarely used stand alone.
◆ RB_POSFIXABLE
| #define RB_POSFIXABLE | ( | _ | ) | ((_) < RUBY_FIXNUM_MAX + 1) |
◆ RUBY_FIXNUM_MAX
| #define RUBY_FIXNUM_MAX (LONG_MAX / 2) |
