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
|
require 'bigdecimal'
describe :bigdecimal_quo, :shared => true do
before(:each) do
@one = BigDecimal("1")
@zero = BigDecimal("0")
@zero_plus = BigDecimal("+0")
@zero_minus = BigDecimal("-0")
@two = BigDecimal("2")
@three = BigDecimal("3")
@eleven = BigDecimal("11")
@nan = BigDecimal("NaN")
@infinity = BigDecimal("Infinity")
@infinity_minus = BigDecimal("-Infinity")
@one_minus = BigDecimal("-1")
@frac_1 = BigDecimal("1E-99999")
@frac_2 = BigDecimal("0.9E-99999")
end
it "returns a / b" do
@two.send(@method, @one, *@object).should == @two
@one.send(@method, @two, *@object).should == BigDecimal("0.5")
@eleven.send(@method, @three, *@object).should be_close(@three + (@two / @three), TOLERANCE)
@one.send(@method, @one_minus, *@object).should == @one_minus
@one_minus.send(@method, @one_minus, *@object).should == @one
@frac_2.send(@method, @frac_1, *@object).should == BigDecimal("0.9")
@frac_1.send(@method, @frac_1, *@object).should == @one
@one.send(@method, BigDecimal('-2E5555'), *@object).should == BigDecimal('-0.5E-5555')
@one.send(@method, BigDecimal('2E-5555'), *@object).should == BigDecimal('0.5E5555')
end
it "returns NaN if NaN is involved" do
@one.send(@method, @nan, *@object).nan?.should == true
@nan.send(@method ,@one).nan?.should == true
end
it "returns 0 if divided by Infinity" do
@zero.send(@method, @infinity, *@object).should == 0
@frac_2.send(@method, @infinity, *@object).should == 0
end
it "returns (+|-) Infinity if (+|-) Infinity divided by one" do
@infinity_minus.send(@method, @one, *@object).should == @infinity_minus
@infinity.send(@method, @one, *@object).should == @infinity
@infinity_minus.send(@method, @one_minus, *@object).should == @infinity
end
it "returns NaN if Infinity / ((+|-) Infinity)" do
@infinity.send(@method, @infinity_minus, *@object).nan?.should == true
@infinity_minus.send(@method, @infinity, *@object).nan?.should == true
end
it "returns (+|-) Infinity if divided by zero" do
@one.send(@method, @zero, *@object).should == @infinity
@one.send(@method, @zero_plus, *@object).should == @infinity
@one.send(@method, @zero_minus, *@object).should == @infinity_minus
end
it "returns NaN if zero is divided by zero" do
@zero.send(@method, @zero, *@object).nan?.should == true
@zero_minus.send(@method, @zero_plus, *@object).nan?.should == true
@zero_plus.send(@method, @zero_minus, *@object).nan?.should == true
end
end
|
