bug#25652: 26.0.50; calc says that cos(1 degree) is 0.54

[Torsten Bronger]

Hallöchen!

Torsten Bronger writes:

> [...]
>
> You can toggle this in calc mode with "m U".  So "m d m U 1 C m U
> 1 C" should exhibit the problem.  Note that you have "Deg" active
> the whole time.  [...]

After havin updated to current git master, I can now reproduce this
on both of my machine.  Can you confirm?

> [...]
>
> And, "90 C" always yielding zero is definitely inconsistent.
> "89.999 C" yields -0.447984214223 while in unit simplification mode,
> so the cosine is not continuous anymore.

As I can reproduce this.

Tschö,
Torsten.

-- 
Torsten Bronger