1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
# frozen_string_literal: true
# date.rb: Written by Tadayoshi Funaba 1998-2011
require 'date_core'
class Date
VERSION = "3.4.1" # :nodoc:
# call-seq:
# infinite? -> false
#
# Returns +false+
def infinite?
false
end
class Infinity < Numeric # :nodoc:
def initialize(d=1) @d = d <=> 0 end
def d() @d end
protected :d
def zero?() false end
def finite?() false end
def infinite?() d.nonzero? end
def nan?() d.zero? end
def abs() self.class.new end
def -@() self.class.new(-d) end
def +@() self.class.new(+d) end
def <=>(other)
case other
when Infinity; return d <=> other.d
when Float::INFINITY; return d <=> 1
when -Float::INFINITY; return d <=> -1
when Numeric; return d
else
begin
l, r = other.coerce(self)
return l <=> r
rescue NoMethodError
end
end
nil
end
def coerce(other)
case other
when Numeric; return -d, d
else
super
end
end
def to_f
return 0 if @d == 0
if @d > 0
Float::INFINITY
else
-Float::INFINITY
end
end
end
end
|
