RE: [Axiom-math] Is there a cleaner way to convert an expression tofloat ?

[Bill Page]

On April 18, 2006 1:45 PM Francois Maltey wrote:
> 
> How can I convert an expression as sin (%pi/5) to a float ?
> 
> I can use sin (%pi/5) + 0.0, but I find it's a dirty tick !
> 
> (sin (%pi/5))::Float doesn't work.
> 
> I refuse to go inside the formula and type : sin (%pi/5::Float).
> 
> Is there an other ability ?
> 

Since the error message is:

"Cannot convert from type Expression Integer to Float"

one might guess to use:

  (sin (%pi/5))::Expression Float

and that would be right although the result is 'Expression Float'.
If you really want/need float you can write:

  (sin (%pi/5))::Expression Float::Float

Regards,
Bill Page.