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
|
require_relative "testbase"
require 'bigdecimal/util'
class TestBigDecimalUtil < Test::Unit::TestCase
def test_BigDecimal_to_d
x = BigDecimal(1)
assert_same(x, x.to_d)
end
def test_Integer_to_d
assert_equal(BigDecimal(1), 1.to_d)
assert_equal(BigDecimal(2<<100), (2<<100).to_d)
end
def test_Float_to_d_without_precision
delta = 1.0/10**(Float::DIG + 1)
assert_in_delta(BigDecimal(0.5, Float::DIG+1), 0.5.to_d, delta)
assert_in_delta(BigDecimal(355.0/113.0, Float::DIG+1), (355.0/113.0).to_d, delta)
end
def test_Float_to_d_with_precision
digits = 5
delta = 1.0/10**(digits)
assert_in_delta(BigDecimal(0.5, 5), 0.5.to_d(digits), delta)
assert_in_delta(BigDecimal(355.0/113.0, 5), (355.0/113.0).to_d(digits), delta)
end
end
|
