You shouldn’t expect bit-for-bit identical results. Even ab + cd is allied by C, C++ and others to yield at least two different results.

You use different methods in different cases. For example, if you use floats instead of double, have a unit test that compares bith methods and checks whether results are acceptable.

You shouldn’t expect bit-for-bit identical results. Even ab + cd is allowed by C, C++ and others to yield at least two different results.

You use different methods in different cases. For example, if you use floats instead of double, have a unit test that compares both methods and checks whether results are acceptable.