What's today's most accurate production retail calculator?

[Marcus von Cube]

(02-17-2014 03:09 PM)HP67 Wrote:  Interesting. An HP 48 also gets much better accuracy in this test in radians rather than degrees. The error is only 2.0E-12!

The test is designed to be worthwhile in degrees only. It produces an intermediate result that stresses the precision of the calculator (cos returns a result close to 1). The test is not designed to evaluate the quality of the algorithms, it's just a convenient way to distinguish various machines and/or the built-in chips.