1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
require File.expand_path('../../../spec_helper', __FILE__)
describe "Float#**" do
it "returns self raise to the other power" do
(2.3 ** 3).should be_close(12.167,TOLERANCE)
(5.2 ** -1).should be_close(0.192307692307692,TOLERANCE)
(9.5 ** 0.5).should be_close(3.08220700148449, TOLERANCE)
(9.5 ** 0xffffffff).to_s.should == 'Infinity'
end
ruby_version_is '1.9' do
it "returns a complex number when negative and raised to a fractional power" do
((-8.0) ** (1.0/3)) .should be_close(Complex(1, 1.73205), TOLERANCE)
((-8.0) ** Rational(1,3)).should be_close(Complex(1, 1.73205), TOLERANCE)
end
end
end
|
