Re: Calc; calc-simplify-units not working as documented for trigometric functions

[dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)]

David Ongaro <david.ongaro@hamburg.de> writes:

> In Calc do
>
> 'sin(45 deg)
> u s
>
> Result: 0.0137073546047
> Expected result: 0.707106781187

I'm confirming this bug on GNU Emacs 25.0.95.1
(x86_64-unknown-linux-gnu, GTK+ Version 3.14.5) of 2016-06-19

I'd like to issue a proper bug-report for it and I'd like to reference
David's mail in a reproducible way.  Could somebody please tell me first
how to reference a specific message from some (GNU) emacs-devel mailing
list archive (preferably with Gnus)?

> The actual result equals to sin(pi/4) in deg mode whereas the expected
> result of "the sine of 45 degrees" is the one documented in
> "info:Calc#Trigonometric and HyperbolicFunctions".

Actually it is documented in (info "(calc) Trigonometric and Hyperbolic
Functions")

Thanks you

      Dieter


> The same applies for other trigonometric functions and for other values
> of 45 or the 'deg' unit (i.e. 'rad or 'grad').
>
>
>
> Emacs : GNU Emacs 25.0.94.1 (x86_64-apple-darwin15.5.0, NS
> appkit-1404.47 Version 10.11.5 (Build 15F34))
>  of 2016-06-09
> Package: Calc
>
>

-- 
Best wishes
H. Dieter Wilhelm
Kelkheim, Germany