diff options
Diffstat (limited to 'spec/ruby/library/complex/math/shared/tanh.rb')
| -rw-r--r-- | spec/ruby/library/complex/math/shared/tanh.rb | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/spec/ruby/library/complex/math/shared/tanh.rb b/spec/ruby/library/complex/math/shared/tanh.rb new file mode 100644 index 0000000000..a26b1349f6 --- /dev/null +++ b/spec/ruby/library/complex/math/shared/tanh.rb @@ -0,0 +1,32 @@ +require File.expand_path('../../fixtures/classes', __FILE__) + +describe :complex_math_tanh, shared: true do + it "returns the hyperbolic tangent of the argument" do + @object.send(:tanh, 0.0).should == 0.0 + @object.send(:tanh, -0.0).should == -0.0 + @object.send(:tanh, infinity_value).should == 1.0 + @object.send(:tanh, -infinity_value).should == -1.0 + @object.send(:tanh, 2.5).should be_close(0.98661429815143, TOLERANCE) + @object.send(:tanh, -4.892).should be_close(-0.999887314427707, TOLERANCE) + end + + it "returns the hyperbolic tangent for Complex numbers" do + @object.send(:tanh, Complex(0, CMath::PI)).should be_close(Complex(0.0, -1.22464679914735e-16), TOLERANCE) + @object.send(:tanh, Complex(3, 4)).should be_close(Complex(1.00070953606723, 0.00490825806749599), TOLERANCE) + end +end + +describe :complex_math_tanh_bang, shared: true do + it "returns the hyperbolic tangent of the argument" do + @object.send(:tanh!, 0.0).should == 0.0 + @object.send(:tanh!, -0.0).should == -0.0 + @object.send(:tanh!, infinity_value).should == 1.0 + @object.send(:tanh!, -infinity_value).should == -1.0 + @object.send(:tanh!, 2.5).should be_close(0.98661429815143, TOLERANCE) + @object.send(:tanh!, -4.892).should be_close(-0.999887314427707, TOLERANCE) + end + + it "raises a TypeError when passed a Complex number" do + lambda { @object.send(:tanh!, Complex(4, 5)) }.should raise_error(TypeError) + end +end |