Re: Radians Or Degrees?

On Thu, 14 Mar 2024 17:34:57 +0000
mitchalsup@aol.com (MitchAlsup1) wrote:

Michael S wrote:
 

(2=X-clause) There exist an infinite precision number X for which
both Foo(X) == y and Rnd(X) == x. 

 
In the second clause:: are we guaranteed that RND(Foo(X))= Y ??
 

No, we are not.

As follows from the (2), it is possible and not uncommon that more
than one finite-precision number y is accepted exact result of
foo(x). 

 

If Committee omits the 2nd clause then the whole proposition will
be not just not useful, but harmful. 

 
An interesting side effect of greater intermediate precision is the
lack of need to round prior to the final result. Thus, my sin(x) over
its entire calculation suffers exactly 1 rounding. Payne & Hanek does
not have this prperty.

Which does not help to recover precision lost during rounding of x
that happened before your wonderful instruction.