It'd be even more insightful if the significant figures discussion touched upon rounding that may be inherent to the calculations. Take sin(x), C math would gi

It'd be even more insightful if the significant figures discussion touched upon rounding that may be inherent to the calculations. Take sin(x), C math would give a different approx value for sin(x+2*pi) even though it should be the same. Well, if only pi was known exactly...