From: nddtwentyone@gmail.com   
      
   Steven G. Kargl  wrote:   
   > On Wed, 23 Oct 2024 06:25:02 +0000, Lawrence D'Oliveiro wrote:   
   >   
   >> On Wed, 23 Oct 2024 07:59:24 +0200, R Daneel Olivaw wrote:   
   >>   
   >>> Lawrence D'Oliveiro wrote:   
   >>>   
   >>>> On Wed, 23 Oct 2024 04:06:26 -0000 (UTC), David Jones wrote:   
   >>>>   
   >>>>> Did you take a high school trigonometry class?   
   >>>>   
   >>>> You seem obsessed with that.   
   >>   
   >> So your favourite functions return an exact result for sin 30°. Do they   
   >> return an exact result for cos 30° as well?   
   >>   
   >   
   > Nope.  For REAL x, COSD(x) returns an exact result for all N >= 0   
   > that satisfies 60+N*360 < 2**23.   
   >   
      
   Could you give an example of where sind and cosd might be of use in a   
   piece of numerical software?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)