diff options
Diffstat (limited to 'spec/rubyspec/library/mathn/float/exponent_spec.rb')
| -rw-r--r-- | spec/rubyspec/library/mathn/float/exponent_spec.rb | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/spec/rubyspec/library/mathn/float/exponent_spec.rb b/spec/rubyspec/library/mathn/float/exponent_spec.rb new file mode 100644 index 0000000000..55af43ce5b --- /dev/null +++ b/spec/rubyspec/library/mathn/float/exponent_spec.rb @@ -0,0 +1,17 @@ +require File.expand_path('../../../../spec_helper', __FILE__) + +ruby_version_is ''...'2.5' do + require 'mathn' + + describe "Float#**" do + it "returns self raised to other (positive) power" do + (2.0 ** 4).should == 16.0 + (2.0 ** 1.2).should be_close(2.2973967, TOLERANCE) + end + + it "returns a complex number when negative and raised to a fractional power" do + ((-8.0) ** (1/3)).should be_close(Complex(1, 1.73205), TOLERANCE) + ((-8.0) ** (1.0/3)).should be_close(Complex(1, 1.73205), TOLERANCE) + end + end +end |