diff options
Diffstat (limited to 'spec/ruby/core/complex/arg_spec.rb')
| -rw-r--r-- | spec/ruby/core/complex/arg_spec.rb | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/spec/ruby/core/complex/arg_spec.rb b/spec/ruby/core/complex/arg_spec.rb new file mode 100644 index 0000000000..dd64102d77 --- /dev/null +++ b/spec/ruby/core/complex/arg_spec.rb @@ -0,0 +1,11 @@ +require_relative '../../spec_helper' + +describe "Complex#arg" do + it "returns the argument -- i.e., the angle from (1, 0) in the complex plane" do + two_pi = 2 * Math::PI + (Complex(1, 0).arg % two_pi).should be_close(0, TOLERANCE) + (Complex(0, 2).arg % two_pi).should be_close(Math::PI * 0.5, TOLERANCE) + (Complex(-100, 0).arg % two_pi).should be_close(Math::PI, TOLERANCE) + (Complex(0, -75.3).arg % two_pi).should be_close(Math::PI * 1.5, TOLERANCE) + end +end |