2018-03-04 10:09:32 -05:00
|
|
|
require_relative '../../spec_helper'
|
2017-05-07 08:04:49 -04:00
|
|
|
|
|
|
|
|
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
|
|
|
|
|
|
|
|
|
|
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
|
